It is more likely that your ISP is to blame because in some countries this forum is blocked.
I don't know what countries banned bitcointalk besides china and russia.
If you @rexxarofmoknathal is indeed from one of these countries then you should use VPN from the beginning accessing the forum, cause you don't know you are already traced. But I could think that this is cause by cloudflare only since the forum used it, and CF unblock your ip address's range so you able to access the site again.