I think the embed/upload issues are due to various updates in the works. Hive Blog is constantly being updated and so is Peakd. 3Speak is likewise undergoing work. Hopefully soon everything will stabilize but for now any issues should be reported and you can move off YouTube to Hive-based solutions like you said.

For 3Speak a ticket can be created at http://support.3speak.tv/ and someone will process it.
For Hive Blog https://gitlab.syncad.com/hive/condenser/-/issues is where users can report problems/glitches.

Just so you are aware, @wehmeon is no longer involved in 3Speak. The proper contact is only @starkerz.