1.19 version flagged as 1.18 so curseforge updates the 1.18 client to 1.19 causing pack to crash.

This is on CF, not us.

Just commenting here to let you know I reported this to Curseforge staff on Discord and they say it's on your end, even though it very clearly isn't.

So you might be getting more deferrment from their "support staff" unfortunately. They'd rather argue instead of passing it up to someone that can find the problem on their end.

I already reported to the CF Dev discord and they are looking into it.