Selling board games during Brussels Games Festival 2018: check my for trade items. :)
Can you upload an image to your personal gallery?
Does the legacy uploader work?
Maybe it is a browser bug/incompatibility? If you have another browser installed, you could try using it.
FWIW I just tried uploading an image now and it worked as usual.
Thanks for your fast feedback.
I tried again and it seems it worked now. I was probably trying to do it in the wrong way.
I would like to apologise for any inconvenience and loss of time I have caused to you.