I have also noticed that in the Grab Bag section I am unable to select consumables such as food or splints into the bags, they are highlighted in red. This is new as I did had consumables in the bags before.
Ahh ok, I think I see what's happening. In RAT, click File -> Import Items / Blocks -- Then wait for the popup to appear saying its done (5ish seconds).
This will get a list of all possible items/blocks so RAT knows what IDs are associated with them. Basically, when the game updates, there are times that this information will change internally to the game. RAT needs to know this about that. Once you do that, the items in RED might go away (or appear as different items, but probably not), if not, remove them and re-add them as their IDs have changed.
This might also explain why your !claim isn't working, is because internally, there are no matching items to give the player. So basically do what I said, then check all of your bags for invalid (red) items, and readd them.