Playlists Ive created wont show

Ive made some playlists but they stopped showing a day or 2 ago. It says "the data couldnt be read because it isnt in the correct format".

I like the product, but will need to find an alternative soon if this isnt fixed. Pity, as this is a paid app.

SwissArmyTenor about ProTube for YouTube, v2.5.8