Works for me too now.

For me, it also continues to happen consistently. The cogwheel spins for maybe a minute while it tries to upload and then it gives the message: "OpenSubtitles is temporarily unavailable, please retry in a little while". This happens for every subtitle I try.

Can confirm. I am having the same issues.

It is working for me again too. Thank you very much for the fix.
Using the uploader is much nicer than doing everything manually.

Recently I also run into problems while trying to upload subtitles. Only a few succeed, for the rest I just get "something went wrong".