Regal Residence Notification Glitch

So, with the Regal Residence notification glitch... In my case, I have not nor do I intend to buy this pack, but I played through all the events. Now I'm getting the glitch despite never even applying the lot trait. I am getting the same bug reported by others except at 50k (while others have been reporting it at 250k) and I never had the Regal Residency on my lot. I just improved the Cordelia's Secret Cottage lot in Henford-on-Bagley and went to live mode.

I don't know if it has something to do with inviting a guest to the lot (as some have reported) so I could exchange a gift from my current played sim's inventory.  I did not invite them to stay over, just onto the lot.

I would also like to note another one of my sims inventory was glitched and not counted as owing the item on the same lot. I had said sim place the items (in this case it was limestone found from digging) in the world and the selection to pick it up was greyed out with the explanation that my sim did not own the item. I had my other sim open the limestone to turn it into fossils and give it as a gift to invited guest. (I did not get screenshots unfortunately)

 I'm not sure if the inventory glitch is somehow tied to the lot value glitch.

I do not play with mods or cc