1) The blue circle inside the d-pad shows your stamina remaining (the number inside the actual stamina amount).
2) As in the action doesn't appear for it? That just isn't implemented yet.
3) Sounds like a bug! Could be to do with one of your backpack items causing it to not load correctly - I'll take a look.
4) Good idea!
1. I see that now thank you!
2. Correct no action appears and ok wasn't sure
3. My backpack started working now. I have to double tap on it which I tried earlier yesterday but it didn't work.