I only get this when connected to the MP server.
I have tried both methods of resetting economy. Editing the config file and using the console.
The offer expiration dates are then normal temporarily, until I click Drive and connect to the server.
Then they reset back to 200+h.
I have even tried buying another garage against my will and fast traveling between them 15 times.
Nothing works and I am desperate for help.
All my drivers say it's going to take them over 200h to complete their current job.