Please change the version check url in the next release, a vbulletin.org thread does not provide this information.
Read this post for an alternative way:
https://vborg.vbsupport.ru/showthrea...ck#post1065771
So it should be:
https://vborg.vbsupport.ru/misc.php?...k&pid=Separate
This however does not work yet, probably because you haven't set the "Mod Product ID" value to Separate in your vBulletin.org mod properties.