Authorization mechanism change in analytics endpoints

Hello, I've noticed a change in how Authorization of requests work onanalytics endpionts like https://europe.analytics.controld.com/queries/historical since the last 24 hours or less.

It used to be a Bearer header field that accepted the user's API Key. Not anymore. It seems to be a very unique and specific string format that I am unable to recognize.

Is there any way to derive that Auth string from the user's API Key?

I am the maker of ControlHub—iOS & macOS app for managing Control D settings and viewing stats and logs. A bunhc of my users reported this issue.

Any help would be mightily appreciated :)

Warmest,
Vishal