How do I remove the dotted border around the text box?
To remove the dotted border around the text box, please follow these steps:
1. Tap once on the text box, this box will be selected with a red border

2. On the tool bar, look for the "Frame" icon, this is to the right of the font icon "Aa".

3. Tap on the "Frame" icon, and then select "No Border". This will remove
the dotted border while keeping the text box content. If you wish to
remove the entire box including the text, please Press and Hold on the
text box and then tap on "Delete".