Multiple issues using version 2.1

Dear developers,

I’m having some issues running on the lastest Learnpress (addons) version(s):
– Gradebook (v1.0) is not yet compatible with Learnpress v2.1 It is not showing any result of any user, while all the courses have been taken several times.
– Random quiz questions (v1.0) are different than lower versions. I have not found the option to add tags to a quiz instead of questions. I’m missing the function to set a limit in questions a lot.
– After I finished a course, the certificate did not show up on Certificates (v1.3).
– The quiz pages are running slowly. Every time after exactly two questions the quiz is buffering for about 30 seconds.

I’m looking forward to your reply. Thanks in advance.

Jeroen Overdevest