Guys, I don't want to say big words, but judging by the huge advertising message on Reddit from NiceHash, it looks like they are uploading version 5.5d themselves.
Because everything matched perfectly: Non-existent versions from accounts with 0 messages, then they complain to Mega (at the same time to the real one) and immediately write huge posts that "STOP using it immediately!"
But the guys from NiceHash failed because of the inadequate posts of their representatives.
You should have said "until the link is available, we are disabling this plugin", not "STOP using it immediately!" and accusations of closed source code.
They did not act very nicely.