My Porsche was hit by Progressive insured client.

My 147k 2025 Porsche was rear ended (at low speed) by a progressive client. The damage is around 10k and will take 2 weeks to repair. All of the damages have been approved but they are telling me

"Your policy allows for a rental within $60/day with an $1800 maximum (30 days). Please contact your file owner to set up a rental within your limits."

this is maybe enough for a Toyota corolla or similar lol

1. Why would my limits have anything to do with this?

2. How to proceed in getting them to approve a comparable loaner?