I am unable to connect from my instance to lemmy.ml

I am trying to see
!rust_rus@xn--e1aghfa.xn--e1aqbccjfc.xn--p1acf
community in community search

here it's web page:
https://xn--e1aghfa.xn--e1aqbccjfc.xn--p1acf/c/rust_rus
https://лемми.опенсорс.рус/c/rust_rus

but button says "Waiting subscribtion" and stays yellow.
So, I am unable to subscrite to that community as a user of lemmy.ml