Once you created an aggregated links (LAGs = Port Trunks = Trunks <- HPE likes to change terminology between product lines) you have to work against the logical interface (e.g. TRK 1 in your case, probably): forget about (re)configuring member ports (e.g. port 2 and 4).
Go to VLAN -> Port Membership (filter for "TRK") and then work by untagging desired VLAN id and/or tagging desired other VLAN ids.
Example:
I have VLAN 1 (Default), 6, 2000 and 2250. VLAN id 2250 is untagged on the TRK 1, VLAN 6 is tagged and VLAN 1 and 2000 don't partecipate (aren't permitted).
TRK 1 is untagged member of (thus included into) VLAN 2250
TRK 1 is tagged member of (thus included into) VLAN 6
TRK 1 is untagged member of (thus excluded by) VLAN 1 and 2000
Screenshots: