Board Thread:General Discussion/@comment-24761405-20161007085728/@comment-126761-20161008021023

As mentioned on the blog post comments (and in replies to users who sent us tickets about this issue), the team have been working on this issue as a priority.

It has been a little complex to nail down - only affecting some users some of the time - but we've been making server tweaks that should be improving matters. The issue appears to be that some requests have been misdirected to servers that don't accept updates (hence errors on attempting to submit changes), which we've been working on resolving.

Apologies for the problems - it's certainly annoying to be prevented from editing. If you're still seeing issues, please let us know via Special:Contact/bug!