OHHH wow thanks for the quick reply I had totally overlooked that.
For all those who read this entry after me the addon is located:
1. mouseover over the plugin
2. select Addon Manager
3. register at Thenewsletterplugin
4. copy the key in the user account
5. insert the key in the addon manager
6. scroll down until “TranslatePress” Bridge appears.
Done!
Thanks Stefano for your help. Now we dare to buy the Pro version.
Many greetings,
Mary