If you discard wooden insignia can't get a new one and complete the new Artifacts and Insignia quest. Cant drop quest to re-start either. Same thing with etched glass enchantment and how enchanting quest
If there is a significant change (Number of keys or posting fee as example) in how VIP works then there should be a option to convert some or all of your unused time as VIP into the new rewards or keys.
Same issue - opened hundreds. Everyone I know who got crystal had not purchased Herman yet. Hopefully not a bile drench issue: https://www.arcgames.com/en/forums/neverwinter#/discussion/1238936/tyrant-hunt-drop-bile-drenched/p1
The weekly limit is 400 - you say shirt +170 is 470. You likely completed 1 run 2 weeks ago and then hit the cap during last week which would get you to 470 and the cap. You SHOULD be able to earn another 400 starting yesterday,