Answer 1

Looks like you're talking about Javascript course. You have to complete projects to get the certificate in the app version. Btw, projects are not available in the web version

Answer 2

I don't know what's the problem exactly, try to update Sl app on phone, or try to be sure that you have same account on phone and on computer.
If the problem persist, don't hesitate to contact SoloLearn per mail.
([e-mail])
Hope I helped you.
Happy coding 🙂

Answer 3

aah, rip who use web version and doesn't have mobile. hope sololearn will add projects to web version too.

Answer 4

Same here but with Python