This was from asgarth in PeakD discord from this morning:
there are some issue with the API nodes. This impact only hivemind so the transactions are on the chain but the frontends are not always able to view the new published content. Some nodes have already applied a patch but not all of them. I'm forcing everyone to use api.hive.blog for a while until all the nodes have been patched
So it may be fixed now or need a few more hours, so give it awhile then try again.
Thanks for forwarding this @bashadow. That might be the reason. I still can't transfer Hive, but at least I can post and upvote now, which I couldn't do before. I'll look out for the Peakd Discord group too.