My Studio 2019 license disappeared from my account

Greetings, all:

After having lost access to Studio 2021 and 2019 on my PC-1 (for reasons not yet understood), I configured a brand new machine (PC-2) while I try solving those problems (hopefully with the help of SDL support personnel :). I installed Studio 2021 in PC-2 without any problems and it's working great. As I was about to install 2019 (I still keep it just in case), I realized that my 2019 license no longer shows in my SDL account. I never deactivated anything and have Freelance PLUS, so I should still have an available license for 2019. When I upgraded to 2021 I was assured that I could still run 2019. Is that indeed true? Right after I upgraded I could still see the 2019 license as well as 2021, but now the 2019 is completely gone.

Any advice/clarification would be GREATLY appreciated.

Many thanks, once again.

Rossella