Problem is, Im sure you know this....any time you upgrade firmware or software, you run that risk of incompatibility. Of course there will be some sort of patch released but that could me whenever which doesn't help you right now. The best, and only, possible solution is to go back. Install the older functional software. I know that can be a slippery slope too. Voice your concerns to Apple and Tidal. It really happens all the time. We by our tech nature want to keep everything updated with latest software and firmware. Try uninstalling the apps, restart, and reinstalling the apps. Lastly, I would contact Tidal and open a support ticket. There will be answer for you be it through Tidal most likely. Try to revert back (ugh I know) to previous stable version. Tread lightly and backup everything.After reverting back to last known stable release. In addition. You should contact that DAC provider. I know how difficult it can be.
Please share you results!