Hello dear colleagues and thank you all for your messages and this lovely exchange! 
I’m glad that my previous reply helped you @SaverioAm and @Karina. You’re right Saverio, the “translated” button works only one time once you refresh the page. As @tgabow said, these are not the best solutions but it is all what we can do for the moment. It’s great to hear that you managed to complete your translation this way.
Well done! 
Thank you @Antoine_Wicquart and @evamariawollinger for reporting this issue. l’ve just moved your posts to this thread.
As you’ve already noticed, this has nothing to do with your devices, it’s a small glitch in the platform and hopefully it’ll be fixed tomorrow. 
Regarding the deadline, @evamariawollinger, in case you need more time to complete the translation, please leave a message on the thread specific to the project you are working on asking the Project Officer for a deadline extension due to this glitch. I’m sure they will understand as you’ve already done your best to meet the deadline. Or you can proceed with the translation following the steps our friend, Antoine, has suggested. 
I’m sure one of the staff members will let us know once the problem is fixed! But if you have further questions and you think I might be able to help, don’t hesitate to ask! 