Navigating loan repayment after divorce - personal status or civil case?

Dear sir/madam,

I gave a loan of 75,000 AED to my husband, who signed a simple, three-sentence loan confirmation letter acknowledging receipt of the money as a loan from me (not notarized).

Afterward, we got divorced. He is now refusing to repay the loan.

A) What should I do, start a Personal Status case using Article 62/1 or a Civil Case?

B) Will this matter be considered as a civil loan between civilians (even though we were married) or is any matter between married couples always under Personal Status law?

I would appreciate your help with these two questions!