My uncle died and left naming as the sole benificiary to his will and leaving me with all money in the bank acct to me,what rights in claiming this ?.

my uncle died in 2006 and left a will to me naming as the sole benificiary to his will and leaving me all the money in the bank to me at the time he was married with my aunt,but after my uncles death,y aunt vanished and is nowhere to be found,since there was no activity on the bank acct,it has now been sent to the state of california to the unclaimed property division,the state sent mea lettter,saying that i might be entitled to the money,i sent all the required documents,such as my uncles will,his death certificate,an affidavit and declarition notirized to collect he funds,the state sent me a letter of rejection,saying that i cant claim the funds,cause they cant proove the will was my uncles,i spoke to 2 attorneys that unser ca probate code 13100 and 13106 i can claim the funds,since i meet the requirements,what can i do?.