RE: Quick campaigns next not working
Microsoft has recently made some updates to the roles by default, which earlier was disabled, due to which users who don't have read access to "Marketing Form Display Attributes" will get privilege issues when trying to distribute campaign activity or Quick campaign.
Once you give them the required access, this should resolve your issue
This issue could be faced when the User doesn't have read permissions on marketingformdisplayattributes ("Marketing Form Display Attributes" )entity.
Can you please try to Give Read Privilege to marketingformdisplayattributes("Marketing Form Display Attributes" )entity for users who has issue via some security role.
Also attaching a screenshot for your reference: