Enroll-Register Proccess Issue

Hello,

The enroll, register process complexity is very problematic.
If the course is free it jumps to profile page after register, where it is written that user has no courses.

The Enroll button inc courses page is not updated according to the logged in user, another enrollment sometimes causes bugs such as non stopping page refreshing.

This phase should be as simple and straight-forward as possible for the user, otherwise it will have a very bad effect on user enrollment and expirience, it basically makes the system not usable.

The most obvious procedure (for both free and paid course) should be:
Enroll course –> Register —> (pay if needed) —> transfer straight to the course.

Another issue that I can’t seem to solve:
The requested password in registration is too strong (12 chars, including number, big letter, small letter, and a sign), it is frustrating. No plugin had any affect on it.