Sounds like reddit. They started banning blocks of VPN IPs after they locked down their API (presumably to prevent screen scraping). If you really want to visit, proton stealth protocol is able to get through sometimes, and old.reddit seems to get through all of the time.
This is basically what I’ve been telling people for years. Prototype in Python to get the concepts down, then when you’re serious about the project, write it in a serious language.