Can suddenly not attach files from my PC to tasks in microsoft planner

Hi,

For some reason, I am suddenly unable to attach files from my PC to tasks in microsoft planner 365 which is a shared plan with more members.
I only get the option to attach a link.

It has worked very well with direct file attachments, until now. It just stopped working in the middle of nowhere on my work day.

I have tried to:
-Acess Planner from both Teams, Planner browser version, Phone aplication. The issue persists.
-Restarted PC
-Tried to create a new planner tab, issue persists

For my understanding, files are saved in the communitys sharepoint document folder. I have therefore tried to copy the file link to the already existing attachments into my browser, to locate the location of the files. I have checked that I am able to upload files to that location, which is succesfull. So I dont think there is any permission issues. I am also the owner of the community.

All my community members also haves the issue.

On the phone application, the 'option' to add attachments is still visual. When I try to attach something, an error occurs.