Error when validating DeepL app

I am trying to validate my DeepL installation after the latest upgrade in the RWS app store, but suddenly I am getting the following error message after I click "Validate saved configuration": "This secret field has an invalid value in the saved configuration." I am using the same account and API key that I have always used (and that was working up until now). I definitely have a paid subscription to DeepL. 

Is there something wrong with the app update or is there something else on my end that I need to udpate?

Thanks! 

Amy

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