Hello helene tammik ,

Please first log into Studio (top right- Signin) and install all updates (Studio and Plugins).

Now reopen the project and see if this makes a difference.

If not, please remove the plugin and reinstall the latest version -https://appstore.sdl.com/language/app/deepl-translation-provider/847/

Now restart your machine/Studio and see if the problem is now resolved.

Thank you Steven, after going through this process several times I finally got there :-)

Yay!

Thanks helene tammik , for letting us know updating solved the issue.

Thank you Helene and Steven, I encountered the exact same issue; updating Trados Studio 2017 fixed it!

Unknown said:

Please first log into Studio (top right- Signin) and install all updates (Studio and Plugins).

By the way may be just me, but it was obscure as to how to update Trados Studio,
so here's a screenshot for anyone else who might be stuck at how to install all updates like I was.

In your usual Studio page, log in at the top right as Steven mentioned, then click the bell icon as following screenshot – any software updates would then show up
(below screenshot says "There are no notifications" because I've already updated to the latest version of Studio)