Hey, you can join their discord https://discord.gg/qcpmt9B and you'll know about issues faster and they can also answer your query faster.
You can try changing the node via link, e.g. https://peakd.com/?node=api.hive.blog
There seems to be an issue with some of the nodes.
RE: Better Way to Publish in Community/Blog and Tips with Hive Engine Tokens