Diablo Immortal: Is there a Banlist cap on accounts?

Hi Lads,
after banning some ppl on 2 different servern I am not able to ban any ppl anymore.
I get an ingame error called: “Fehlgeschagen” / “failed”

Is there a cap on a ban list on my account?
I play on two EU/DE server and the chat is so small and so many ppl writing in languages I don’t understand. I started to block them, approx 25 ppl so far and getting the error message now.

I am not able to read the chat with all the languages I can’t read and missing informations I want to read.

Can you fix this issue? That I am able to block all languages I can’t read.
I am fine to block 200 ppl on 2 server, as long I can read the chat.

Thanks, G.

Edit on 2nd July:
Hi Blizzard,
didn’t hear or seen anything from you about this issue yet.
Is there a fix planned? Can someone explain why I can block only some ppl and not all the ppl I want. Is annoying that I can’t block the Platinum Sellers anymore.
I want to block more ppl.
Can’t be so hard to fix something like that with a small update.
Thanks, G.

Edit on 8th July:
Hi Lads,
issue is still there after the update/maintenance from wednesday.
Why is it so hard to fix something simple like this?
Thanks, G.