Can I make a plea for all right minded people to turn off the default Tapatalk (free plug) signature?
This can't be hidden by turning off signatures, as they aren't in a sig block, they're just more (free ad) text added to your post.

Tap the 'Me' icon bottom right of app.
Tap the 'Settings' line.
Scroll down to the 'Signature' line.
Tap the toggle switch to turn the signature off.