The answer is yes.
It seems that only non-latin usernames have problems in my case.
(This api_key was immediately revoked by me, so there is no problem with leaking it.)
Iām curious to know if this particular site is installed in a different manner, perhaps another proxy in front of it?
It is indeed behind the proxy. Iām not sure, maybe that had an impact?
I suspect the proxy may be the cause.
Can you send the request direct to the real serverās IP and see what result you get back?
Thatāll let us know if itās Cloudflare interfering.