A few weeks back they went on a mass banning spree too after a mass protest from users. I 'could' still access it as I use a VPN and have for the last 12-13yrs... the OSA affected me for 2 seconds, as I switched from a server in one country to another.... But imgur went to shit a long time ago, bowing to chinese investors and censoring shit, then being bought by a toxic company known for degrading services and running them into the ground whilst pocketing as much cash as they get their hands on.
So imgur has been dying for many years, and this is just finishing it off.
Don't fret, there are alternatives and they're not corpo controlled by wankers.