I’ve been installing MRC88 since it was available and so far I have no problems with the unit itself except when some features does not work the way it suppose to work and when they upgrade the firmware it looks like those problems are fixed.
I know that sometimes it’s hard to get thru the tech support however I like to know which company’s tech support is better you always have to be on hold some more some less time.

Verify that you have the latest firmware 1.41 and you should be OK.

Good Luck.