Answer
(Fatwa: 2108/1938=D/1429)
What do you mean by ‘solving the problems’? Only Allah Almighty has the sole power to harm and benefit anyone. It is the duty of man to adopt the sources; one of the strongest sources is praying to Allah. One can himself pray to Allah as well as request others to pray for him, both the ways are Sunnah. Therefore, one should keep reciting Quranic verses and duas of Hadith promising expansion in livelihood. As per the Shariah, it is also lawful to write these duas as taweez. If the mentioned Aalim gives taweez from Quranic verses, duas of Hadith, then one can take and use them.
But, if there are other modes for solving problems, you should ask him and write them in detail and submit the question again.
Allah (Subhana Wa Ta’ala) knows Best
Darul Ifta,
Darul Uloom Deoband