I done all but it didn't help:(
still categories not choosable,and pics not uploadable
Sorry tell you, but you not yet done all. A long path of work to fix them. I hope you have all backups with your custom versions of your own theme since beginning of first version (changed).
Currently, you have a lot of JS errors on your theme.
These errors freeze other JS functions from osclass script.
For other hand, your theme with these all errors, your domain is penalized on google too.
For big adventures, the best and favorite tool is:
backup, backup, backup... to save all independent versions, to what you did on your custom theme. Or, will be a great frustrating headache to try fix all without old backups.
Why losting a lot of time with it to have JS errors? Is the same to think: "what matters is if all of funtionalities of theme are working, and the rest of errors is relative, or I don't care about it . I just want this working".
I hope you don't think like that, or like I said: why losting a lot of time with it to get errors in the end, and no to know how to fix all them? (
backup, backup, backup... or can be very to late with all time spent). Better you start from scratch and save each version with a new functionallity, making sure no exist any error? Maybe you will save time correctly now, do the things like that.
I'm just trying to help you through how to get things right if you do not have backups. Or, go back on your backup versions to be easier for you fix something.
Regards