Hey, I'm about 3 years too late but I'm facing the exact same issue. I bought my Eris E5's in July 2020 and I started facing this issue about 2-3 months ago.
What's weird is that when I went to the dealer to show him the issue, it they worked perfectly. And I mean my entire setup, including cables, laptops, interface and everything.
Now I'm stuck in this funny situation where I have no clue what to do and I really don't want to sit around and wait for my warranty to expire.
I was wondering is you ever figured out a solution, or how you went forward with it.
Thanks!!