I am having an older version key (22.3) and currently when trying to use it, it is showing that I need version 25.2.
Is there anything that can be done for my older version?
Not clear what you are talking about. Once you installed a newer version like 25.2 then the business files can only be opened by that or later versions. It appears that you may have used the business files in a Manager version 25.2 and tried to open it with an older version 22.3 which is not possible.