FairEmail/app/src/main/res/layout/fragment_pro.xml

<?xml version="1.0" encoding="utf-8"?>
<eu.faircode.email.ScrollViewEx xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:padding="12dp"
    android:scrollbarStyle="outsideOverlay"
    tools:context="eu.faircode.email.ActivityView">

    <androidx.constraintlayout.widget.ConstraintLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content">

        <eu.faircode.email.FixedTextView
            android:id="@+id/tvPending"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/title_pro_pending"
            android:textAppearance="@style/TextAppearance.AppCompat.Medium"
            android:textColor="?android:attr/textColorPrimary"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="parent" />

        <eu.faircode.email.FixedTextView
            android:id="@+id/tvActivated"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/title_pro_activated"
            android:textAppearance="@style/TextAppearance.AppCompat.Medium"
            android:textColor="?android:attr/textColorPrimary"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@id/tvPending" />

        <eu.faircode.email.FixedTextView
            android:id="@+id/tvInfo"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginTop="12dp"
            android:text="@string/title_pro_info"
            android:textAppearance="@style/TextAppearance.AppCompat.Small"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@id/tvActivated" />

        <CheckBox
            android:id="@+id/cbHide"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginTop="12dp"
            android:text="@string/title_pro_hide"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@id/tvInfo" />

        <eu.faircode.email.FixedTextView
            android:id="@+id/tvList"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginTop="24dp"
            android:text="@string/title_pro_list"
            android:textAppearance="@style/TextAppearance.AppCompat.Medium"
            android:textColor="?android:attr/textColorLink"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@id/cbHide" />

        <Button
            android:id="@+id/btnPurchase"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginTop="24dp"
            android:text="@string/title_pro_purchase"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@id/tvList" />

        <eu.faircode.email.FixedTextView
            android:id="@+id/tvPrice"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginStart="12dp"
            android:text="5 euro"
            android:textAppearance="@style/TextAppearance.AppCompat.Medium"
            app:layout_constraintBottom_toBottomOf="@+id/btnPurchase"
            app:layout_constraintStart_toEndOf="@+id/btnPurchase"
            app:layout_constraintTop_toTopOf="@+id/btnPurchase" />

        <ImageView
            android:id="@+id/ivExternal"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginStart="12dp"
            android:contentDescription="@string/title_pro_purchase"
            app:layout_constraintBottom_toBottomOf="@+id/btnPurchase"
            app:layout_constraintStart_toEndOf="@+id/tvPrice"
            app:layout_constraintTop_toTopOf="@+id/btnPurchase"
            app:srcCompat="@drawable/baseline_open_in_new_24" />

        <eu.faircode.email.FixedTextView
            android:id="@+id/tvOnce"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginTop="24dp"
            android:text="@string/title_pro_once"
            android:textAppearance="@style/TextAppearance.AppCompat.Small"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@+id/btnPurchase" />

        <eu.faircode.email.FixedTextView
            android:id="@+id/tvHint"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginTop="12dp"
            android:text="@string/title_pro_hint"
            android:textAppearance="@style/TextAppearance.AppCompat.Small"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@id/tvOnce" />

        <eu.faircode.email.FixedTextView
            android:id="@+id/tvPriceHint"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginTop="12dp"
            android:text="@string/title_pro_price"
            android:textAppearance="@style/TextAppearance.AppCompat.Small"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@id/tvHint" />

        <Button
            android:id="@+id/btnCheck"
            style="?android:attr/buttonStyleSmall"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginTop="12dp"
            android:text="@string/title_check"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@id/tvPriceHint" />
    </androidx.constraintlayout.widget.ConstraintLayout>
</eu.faircode.email.ScrollViewEx>