Hello Anastasia Ntougia

Please try to reset the license from your RWS account as described in this article: https://gateway.rws.com/csm?id=kb_article_view&sysparm_article=KB0038545

If it doesn`t work I`ll log a support ticket to have your license reset by a RWS engineer.

Thank you,
Sorin

Thank you dear Sorin, your advice was very helpful!

Ich muss mich leider noch mal melden hier, denn nun versuche ich Trados 2019 erneut auf meinem Computer zu installieren und es kommt diese Meldung, die Installation wird dadurch gestoppt, 

Hello Anastasia Ntougia

Try to install Studio 2019 manually as described in this article: https://gateway.rws.com/csm?id=kb_article_view&sysparm_article=KB0029228

Thank you,

Sorin

Hello Anastasia Ntougia

Try to install Studio 2019 manually as described in this article: https://gateway.rws.com/csm?id=kb_article_view&sysparm_article=KB0029228

Thank you,

Sorin

Thank you, problem solved!