I have Office 2019 on my old laptop the last four years.


I now have a new Laptop and have re-installed Office onto it one month ago.
All working fine.


Some days ago I started getting popups when launching office, saying that it needed registering.
I ignored it as I thought all was working ok.


However, two days ago Office stopped working.
One month after having re-installed it.


I tried registration with my key.
Said it was invalid.


The licence is for one device only.


If I unistall from my old laptop will the licence then become valid?
Is there any risk that I will lose access to Office entirely and not be able to re-install on the old laptop?


Not sure what route to take.
Please help.