Coreldraw Home & Student suite 2019: applications don't start (only show "initializing user interface")

Since a couple of days none of the H&S 2019 applications start, I only get the "initializing user interface" screen, then nothing.

i've tried starting the applications holding down the F8 key and do get the question "are you sure you want to overwrite the current workspace with the factory default?"... but when clicking 'yes' the applications still don't start.

I have an older version of the software but It can't open the files i've created the past 6 months.

I hope there is a quick solution for this

Thanks for your help