Could be a couple different reasons, but if you have access to the accounts where the review was written u need to login to that account, sign up for g+, the go to maps.Google.com click "my places" and there's a dropdown menu that should give u options, i think if u click edit and save it should trigger it back. also i think u can do it from within g+ click the local tab and edit from there...im on my cell might have things a bit.mixed uo but that should point you in the right direction, if u have access to the review accounts, if not u may try to contact the customers. there's also just general issues with big g loading.reviews in which case u will probably just have to wait for them to come back naturally. hole that helps.