Unfortunately, neither the Adobe Stock nor the Shutterstock connection works for me.
Hey there Arne! 
Would you like to describe your current issue a little more?
Unfortunately, the Adobe Stock feature is experiencing issues at the moment caused by Adobe (seems a global issue with their API for a long time). We are in contact with Adobe to find a solution.
In my opinion it would be better to disable the Adobe Stock feature in the GUI as long as it does not work.
