>>87396I had to delete all 4chan cookies, browser cache, and re-authenticate on both the 4chan and 4channel URLs to finally get it to work. If you have browser extensions like ublock or script blockers like umatrix or noscript, that complicates it even further; I had to temporarily turn off all blocking extensions to let the authentication work because the difference in URLs makes them think it's third-parties trying to load malicious scripts.
