5e Community Contributed Sheets

So recently I've noticed that the Community Contributed sheets have been a little...buggy for my game for example not adding up Spell DC's correctly and as of recently hasn't been adding the proficiency bonus to one of my players saving throws, not sure if there's any possible way to fix it, currently I'm just debating on switching sheets but if there's a way to fix it someone let me know. 

That can happen if an attribute gets messed up.  Look through the attributes on the Abilities and Attributes page and see if there are any duplicates. Also if the Prof Bonus isn't working find the PB attribute on that page and delete it. If you delete attributes that the sheet needs it will repopulate them, so you don't have to worry too much.