If you have a contract with a company that doesn't exist, then you don't have a contract. Pull the panels yourself, then put them back yourself. It ain't rocket science. Normal boring people put their own solar panels up every single day. Whats' gonna happen, you lose your warranty?
Or take the panels down, sell them on Facebook Marketplace, and wash your hands of it. You'll lose money paying the last 10 years, but probably less money than you'll loose by R&Ring everything.