The current WACUP preview build is #7236 (March 11th 2021) & the current beta build is #14638 (Feb 23rd 2023)
The official invite link for the WACUP Discord server is:
Due to the size of the community at the moment it's not financially viable to get nor expect the server to be boosted enough to get access to a vanity url nor is applying to be a Discord partner (at the last time of checking) being a viable option.
So to help avoid any confusion about not having a WACUP specifc invite link (e.g. discord/wacup) & avoid people wasting their money I wanted to make sure it's as clear as possible what the intended invite link is & save having to make your own :)