By the way, I did give it a shot myself today, but unfortunately all my phones are unjailbreakable (even my two old 6 Pluses are on 12.2, and the latest jailbreakable version is 12.1.2), meaning I can't decrypt the app bundle. So cracking it myself is out of the picture for the foreseeable future (unless someone shares a decrypted bundle with me).
xsaiting's website seems to work but his backend proxy code is not open source (not at the moment), so it doesn't help.
I did notice something else earlier today, so a fix here will be released as soon as I get around to it.
Interestingly enough, my periodic monitoring script (feeding https://github.com/SNH48Live/snh48g-livestreams-analysis) did not lead to an IP block. Then again I don't spam the API, only once every ten minutes.