Ve'nari Maw Upgrades

I purchased the item that allows us to use the grapple points in the maw. Every time I use it, it goes to the closest grapple point instead of the point that I select it to go to. Is this working as intended?

Also, I purchased the permanent immunity to assassins. The assassins still spawn … I guess I did not check to see if they do no damage to me though.

The assassin and abductor upgrades are not “permanent” immunity; you may want to re-read the tooltips.
https://us.forums.blizzard.com/en/wow/t/venari-maw-upgrades-not-working/754729/2