I’m behind and trying to catch up, so if this has been laid to rest, sorry!
The $3000 paid in June was their tax bill, likely for the first half of the year. Their taxes were collected as part of their monthly mortgage payment. The annual taxes are divided by 12 months and the payments escrowed. Then usually there are two annual payments paid to the county assessor for the property taxes.
Given that the tax bill was paid in full, it is safe to assume that they were up to date on their mortgage. Why? Because if they weren’t the full tax bill wouldn’t have been paid... the payment collector (in this case Chase) passes on only what they collect.
So many people were screeching about how they were on the brink of losing the house and the walls are caving in and blah blah blah. No, I think they were paying the mortgage just fine.