I received a similar response from Qobuz last month a month after contacting them. I hope they fix it soon since I just renewed subscription for another year:
Hello,
Thank you for your message.
Please excuse this delay, due to a high volume of requests.
Some playback issues are currently affecting Qobuz, particularly when using certain applications or audio quality settings.
Our teams have identified the source of the problem. It is related to a caching anomaly within our content delivery network (CDN). In some cases, certain servers may temporarily deliver incomplete or corrupted audio files. As each audio quality corresponds to a different file, switching quality can sometimes resolve the issue by loading a correct version.
We are actively working on resolving this situation. Our teams are currently identifying the affected tracks and progressively clearing the cache. Improvements should be visible very soon.
We sincerely apologize for the inconvenience and thank you for your patience and understanding.
Best regards,
Nancy

