I am trying to see
!rust_rusxn--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

Your instance is not configured properly.
curl -H 'Accept: application/activity+json' https://лемми.опенсорс.рус/c/rust_russhould return JSON data but it returns HTML. See the troubleshooting page and make sure you followed the setup instructions properly.You can also get help via Matrix.
I’ve fixed the Apache configuration to properly route requests with Accept: application/activity+json header to the backend, and updated all internal URLs in the database from the internal hostname to the public domain. Now the endpoint returns some JSON as you requested.
curl -H 'Accept: application/activity+json' https://лемми.опенсорс.рус/c/rust_rus
$ curl -H 'Accept: application/activity+json' https://лемми.опенсорс.рус/c/rust_rus { "@context": [ "https://join-lemmy.org/context.json", "https://www.w3.org/ns/activitystreams" ], "type": "Group", "id": "https://xn--e1aghfa.xn--e1aqbccjfc.xn--p1acf/c/rust_rus", "preferredUsername": "rust_rus", "inbox": "https://xn--e1aghfa.xn--e1aqbccjfc.xn--p1acf/c/rust_rus/inbox", "followers": "https://xn--e1aghfa.xn--e1aqbccjfc.xn--p1acf/c/rust_rus/followers", "publicKey": { "id": "https://xn--e1aghfa.xn--e1aqbccjfc.xn--p1acf/c/rust_rus#main-key", "owner": "https://xn--e1aghfa.xn--e1aqbccjfc.xn--p1acf/c/rust_rus", "publicKeyPem": "-----BEGIN PUBLIC KEY-----\nMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAn48V3rPTqtEHHFzKHAVS\njfl593Qy0G4GTXWaIyP0Zuv/lyw90LmKZKe1nnzQ+GDv4glcdjp1RpJ/C/6Yw+91\nuOmvR734mhCa21f7+5tlUnsg1kENbV4oTtFlEBFSBTCjf7uJNNds3UBz7oMQpq0T\nB7+PxSKd1kUZboBDhkWaB3M+etgxos6IAX9Va+YVoHEoB5k+zkZ9PrOViuI3C76R\nAsNoOBmE9ZzhOWb+BT/g7KWuxIULYteUyqbPQH5VYqfcv6/vTrNsMeMhIei6QV+b\nsl4xVX+NRhhrtqGhPMietK1oDhvzvEn0/VV4jjXT8bquMUnoQ3N7Eq3JN35eO/ZK\n0wIDAQAB\n-----END PUBLIC KEY-----\n" }, "name": "Раст (Общение на русском языке)", "summary": "<p>Программирование на Rust</p>\n", "source": { "content": "Программирование на Rust", "mediaType": "text/markdown" }, "sensitive": false, "attributedTo": "https://xn--e1aghfa.xn--e1aqbccjfc.xn--p1acf/c/rust_rus/moderators", "postingRestrictedToMods": false, "outbox": "https://xn--e1aghfa.xn--e1aqbccjfc.xn--p1acf/c/rust_rus/outbox", "endpoints": { "sharedInbox": "https://xn--e1aghfa.xn--e1aqbccjfc.xn--p1acf/inbox" }, "featured": "https://xn--e1aghfa.xn--e1aqbccjfc.xn--p1acf/c/rust_rus/featured", "language": [ { "identifier": "ru", "name": "Русский" } ], "published": "2026-06-11T18:51:34.786453Z" }Good, I can fetch the community now from lemmy.ml and made a test comment.