HELP! not activating

[AlexPCD]

I bought a new PC for work, managed to move all my files across however I had nitro Pro on my old PC and was going to move it across by deactivating it on my old PC. I tried deactivating it via nitro itself and doing it online, it says I deactivated it but when loading it onto my new PC I get an error. However if I uninstall and reinstall nitro from my old PC and use my Serial number to activate it on my old PC it activates just fine.

I have uninstalled and reinstalled nitro using the exact same version of nitro used before but still cant move the serial number to my new PC

I need this for work and without it I am stuck Only have a couple days on the trial left please help me get my key working

Picture Of error:

https://drive.google.com/file/d/1ypfh5xmXf2f1G3qfb9pd779ADbeA45zI/view?usp=sharing 

[Reymund G.]

Hi @AlexPCD,

Thank you for reaching out to us through our Community Forums!

Please send me the serial number you use to activate Nitro Pro so I could check its activation records. 
You can send it through private message (mouse hover my profile then click the 'Message' link).

Kind regards,