Updating Roon is taking many hours and it is still not complete. This is strange as I have no song libraries stored anywhere on my home computers and mainly use Roon for online streaming from Tidal.
A belated welcome to the Roon community 
I’m so sorry it took us this long to get back to you - I surely thought this was going to be much sooner. Are you still unable to update Roon?
Hi Rebeka! Yes I am still unable to update it.
Then please could you give some more detail on your Roon and networking setup as described below. This will help the Support team to diagnose the issue you are having. Thanks.