In order to assist you best please describe in details your issue.
Regarding the first question "Execution happened for the first time but not the second time" what does that mean? Please elaborate a bit more on your scenario.
1. Please send us the execution log
2. Record a short Jing
video so we can better understand what is exactly happening.
3. Give us more detailed information about the problem.
Regarding the other issues please split them into another tickets.
Note that the best practice is to split separate issues in different tickets which help us better investigate and handle them in timely manner.
Hope to hear from you soon.