Alabama tax property situation!!!!!

[Keith Grady]

(Alabama Tax investors). Hope you all is well. I have a situation. Short and sweet.  I purchased a vacant tax property, made repairs, then received redemption affidavit from taxpayer, certified mailed them improvement invoice within 10 days. It's been over 10 days and taxpayers have not appointed a referee nor contacted me. What is the next step for me if I don't hear from them? They also boarded up every entry to the property after I made repairs and forced possession back.