Modern Event Calendar failed to update

Support
#1

When trying to update MEC it says theme is updated but still keeps the same version:
https://prnt.sc/yBTDQ0dE_Ct0

Also this old version of the plugin flags vulnerability:
https://prnt.sc/OCkdOJDoHJ9P

Please advise on how to update the plugin

#2

I’m experiencing a similar issue with Envira Gallery. I’ve also tried deleting and reinstalling, but still not working.