In my case getting one rep to tier 6 gave me the skills invalid issue. Finishing the other eleven reps 18 hours later then relogging removed the invalid status without having to respec. i would suggest waiting until all reps are complete before trying to respec. however i did have to reslot all of the rep trait. personal…
kits and kit modules require KIT upgrades not GROUND upgrades. if you look in the upgrade window it even tells you what type of upgrade you need for each item you want to upgrade. in the pictures you supplied it clearly says kit upgrades. the ground upgrades are for weapons and armor