I keep trying to add Java as a skill on my profile and it seems to only last for a few minutes is this a bug?

Answer 1

For skills that SL has courses on, you'll need to complete that course in order for the skill to persist. If they add to the course at a later date you'll find that the skill is again removed until you once again complete the course.

Answer 2

Yes. You can contact sololearn's support through the feedback function in the app or via mail to [e-mail]