Ask a landlord-tenant lawyer and get answers ASAP
HelloThis is Samuel. You have a lease and if rent is due on the 15th with 5 days grace before any late charge, then I suggest you continue to pay the way the lease provides.If you want to move out, then you can give the Notice to Vacate as you have. If you want to stay, then I suggest you can put the rent into an escrow account and give the LL that Notice that the rent is in escrow until they can provide information that the rental is secure. Put it all in writing and mail it certified with a return receipt requested.
A letter from the bank may be enough. Of course, they don't have to supply you anything. You can make the request, but you have no right to their personal financial information. They can tell you to pound sand.
The only statute will be one where you can hold rent due to the premises being inhabitable. And so there is no law that mandates they must provide you with any personal information.
The only right you have is to pay your rent according to your lease. If the property is in foreclosure, generally you have time to prepare before the lender will evict. Foreclosures are a process.