Upgraded to 13 but several Nitro Pro 12 serial numbers won't work

[Bouey Termite]

I checked the serial number and ensured they are deactivated; then I upgrade them and it shows that they are ready to go.  I tried to activate my upgrades with the serial number on multiple machines, but it says the serial number is not valid.  We really need this fixed as I just upgrade all computers to Nitro Pro 13.  It would be really helpful to be able to open at ticket, but it says we cannot.  We really need some assistance.   Our trial expires in 12 days.

Edited March 19, 2021 by Bouey Termite

[Allain Umailin]

Hello @Bouey Termite,

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

As per our server logs, I can see you were able to activate your Nitro Pro 13 twice using the serial number 50490x-xxxxxx-xxx220.

Should you still need further assist you, could you please provide the serial number of your Nitro Pro you are having issue activating?

To send it via private message, hover your mouse on top of my name 'AllainU' and select 'Message'.

Thank you very much in advance and I am looking forward to hearing back from you.