Educational grant License activation Issues

Hello,

we have just renewed our educational grant license for this year for 300 seats. we have received an email with the serial number to activate our unity installations. However we are having issues with activation. following the guide here: Activating Your Education Grant License (EGL) - Unity Learn

Command line activation does not work and does not license unity and during a manual activation via Unity HUB we are met with a error stating that this key has reached its maximum number of activations although this cannot be the case as it has just been renewed. I have also attached an image of the error.

Should i request more seats to resolve this. I have contacted support but my request has been with them for over a month now with no reply.

error is below:

Many thanks,
Callum