I've also got the Tidal login issue in the UK. I'm using MD600 as Core into two MS600 zones.

There was mention further up the thread that a Core restart might trigger the issue. A bit anecdotal as I can't remember the exact sequence but I did power cycle the Core last week post which I noticed the issue. Like many I've been working from home and I had a problem with Control:PC connecting, which I ended up resolving by the Core restart after failing to solve by restarting computer. My Core had been up for weeks/months prior to that.

I really hope Meridian come through with a fix for this. Tidal is a really important part of the Sooloos experience for me and I don't really want to go down the Roon route. I'm happy with the Sooloos interface and functionality and don't want the cost/hassle of implementing a new solution, particularly with all the uncertainty in the world at the moment.

Come on Meridian, you are making it very hard for people to consider investing in your products with the total lack of support for Sooloos. Fine if you don't want to upgrade the software but at minimum maintain the existing functionality to protect your loyal customers and their investments.

MD600, MS600