Rental Agent threatening termination of tenency

Me and a friend (they are a couple with 2 kids) rent a 4 bedroom house near Goldie. The rental agency did a 3 month routine inspection in September and we get an email from this 2 days ago saying -

"We recently conducted a Routine Inspection at the property and were disappointed to find items of major concern relating to the condition of the property that require urgent attention.

These items potentially put you in breach of the agreed terms of your rental agreement and if not rectified immediately may lead to termination of the tenancy."

• The issue is, that the garage door has a dent on it that I frankly never noticed because I don't park my car in the garage and use a side entrance. I sort of panicked because it's very difficult to find a place to rent these days. However, feeling suspicious, I checked the previous photos of the property on four different rental and property websites and in each of them the dent was pretty visible on the garage door and all the listings were from dates before we moved into the place. But the funny thing is, on the condition report, the door looks brand new and in another pic it looks like they are hiding it behind some stuff. It's obvious that the agent is blatantly lying to us and wants us to repair the damage caused by a previous renter.

I don't know what to do at this point. What are the odds that he can terminate our tenency if I show him the proof and refuse to fix it on our dime?

Photos attached for reference.