I would assume so. I can see from my browser history that i succesfully submitted captures to archive.today on 7th of January, but failed to do so starting from 12th of January. IIRC they contacted gyrovague around the 10th so seems unlikely to be a coincidence. Applies to VPNs as well. Tried first with a VPN located in Finland and it gets endless captcha loop, then with a Swedish VPN which let me through to the front page after solving one captcha.