For example this feed is not upgrading since Jan 23:
https://anidex.info/rss/?cat=0
I reckon they started protecting it around that time, its’ protected by https://ddos-guard.net/
DDos protection on rss feeds
Yes, it returns “403 Forbidden” by ddos guard. You could ask them to whitelist their RSS feeds or whitelist User-Agent “BazQux”.
Is there nothing what could be done on your side?
Perhaps I could ask ddos guard to whitelist my servers (I did it for CloudFlare, but some CloudFlare sites still block RSS feeds) but I don’t think that they will answer soon (if at all). Better to mail anidex.info
Well i wrote to them, but most likely nothing will happen, they didn’t even know that there is protection on the rss 