Does continuous obstruction for six months in completing the engagement, despite daily Istikhara prayer, indicate a sign to leave the suitor who is lower in social and financial status and religiosity than the fiancée's family?

In summary:

The material and social difference between the two families does not cause harm, because the competency considered in marriage is competency in religious commitment. Seeking guidance from Allah (istikharah) is recommended in marriage and other permissible matters. It is advised to proceed with the matter and not reject the suitor as long as he possesses religiosity and good character, unless there is harm in delaying. It should be noted that part of the sincerity in istikharah is to relinquish one's own choice and entrust the matter to Allah. One should empty their heart of all thoughts after performing istikharah.