Be advised that it sounds like SS has deemed you incompetent to handle your financial affairs. This is not as benign as it seems. If it matters, you might want to check on the legalities of firearm ownership. You have may just lost your right to own a firearm and could be subject to criminal prosecution if in possession of a firearm, re: 27 C.F.R. § 478.11, as follows:
ADJUDICATED AS A MENTAL DEFECTIVE
a. A determination by a court, board, commission, or other lawful authority that a person, as a result of marked subnormal intelligence, or mental illness, incompetency, condition, or disease:
1. Is a danger to himself or to others; or
2. Lacks the mental capacity to contract or manage his own affairs.
b. The term shall include—
1. A finding of insanity by a court in a criminal case; and
2. Those persons found incompetent to stand trial or found not guilty by reason of lack of mental responsibility pursuant to articles 50a and 72b of the Uniform Code of Military Justice, 10 U.S.C. 850a, 876b.