When the tenant is resisting your efforts in that manner i don't recommend showing the property. You can serve a three day notice and then file an eviction action or wait for the lease to end then file your eviction but you probably need to evict the tenant. If they have not paid in two months they may be planning on staying as long as they can.
Consider placing a sign in the rear window that states "Tag stolen" and list your current tag number, also state that a replacement has been ordered. That should put them on notice that your car is not abandoned and that the car is registered.
Be sure to file a response within the time period. What you should include will depend on the allegations in the complaint. Do not write a letter explaining the hardship you are going through and expect the court to be lenient. The court gets that sort of letter all the time and it does not serve as a denial of the lender's claims. A better choice is to contact a consumer lawyer for a consultation and determine what defenses you may have. In Dade City you could try contacting Mike Wasylik, Esq.
If there is equity in the home then you should be entitled to a portion of any sale proceeds after paying of the mortgage and any other encumbrances. If the house is worth less than the loan, then there is nothing to gain form the sale of the house. Since you are not liable for the loan, the lender will not be able to seek payment form you but you will probably be a defendant in a foreclosure action because you are on the title.
You should contact an attorney for a short consultation to explain the documents to you. You are not guaranteed a hearing date when you are sued. Your failure to respond to the lawsuit could result in default and judgment against you without ever setting foot in court. Do not assume the lawsuit is regarding your foreclosure. It could be another creditor suing you. Have you considered bankruptcy? It may be an option depending on your situation.
If you own the property jointly with your ex, then he can probably file a partition action and force the sale of the house. If you have been served with a summons in a lawsuit, you should consult a real estate attorney immediately.
Most of the questions you ask will be determined by the arbitration agreement. Review the arbitration agreement. It should state the arbitration administrator, the location where the arbitration would be held.
You have described a month-to-month tenancy under an oral lease. You can give a tenant 15 days notice before the end of the payment period that the lease is terminated. If they do not move out after the notice you may evict