Cannot change representative image

[chrisg_62]

After having problems uploading images, and getting other people's images appearing in my gallery, I now cannot change the representative image.
It is stuck on the first image of the gallery. Please, could someone sort these problems out, which appear to have arisen from the recent changes
in server hardware.

[emily]

https://forum.pbase.com/viewtopic.php?f ... 05#p379383