The "Add new Term" and "Quick Add new term" are both greyed and cannot be used, except when I select source and target content. Please help

Question

Please help me. I wish I could send a video to you guys because this problem is kind of unique. 
 When I want to add my content translation content (by the way I use Trados 2021 but my MultiTerm is the 2017 version), if I select the all content on the source and target side as shown below, Trados allows me to use add a new term or quickly add a new term. It super slows me down if I do it that way. Can any who experienced the same problem help me? 
 
 Screensaver quality is very low. I can't upload jpeg here.

Oana Nagy · Answer

Hello Emrah Tuncer , 
 It is essential that you are running both Studio and MultiTerm are both on the latest version ie Studio 2021 and MultiTerm 2021 with the latest updates installed. 
 Please install MultiTerm 2021 and then ensure the updates are applied.

Nora Díaz · Answer

Hi Emrah, 
 I'm not sure I understand what the problem is. This is the usual procedure for adding new terms to the termbase, with the two options you have described: first you select the source and target terms, then add them to the termbase with one of those two options. Were you expecting something else? Are you perhaps thinking of adding the translation to your translation memory instead? If so, the shortcut for that is Ctrl+Enter.

Trados Studio > 1. Trados Studio

The "Add new Term" and "Quick Add new term" are both greyed and cannot be used, except when I select source and target content. Please help