I see nothing wrong with trying to find help with the reflow, if i were within local mailing distance i’d offer.
I hope you get this sorted. If you do decide to try a reflow yourself there’s plenty of info on here as to how to do it.
Just in case, i posted this on another thread recently, it’s not the only video on reflow but it will give you an idea of what’s involved to get you started:
https://budgetlightforum.com/t/-/39482