Google places API fix on my website www.mokyfit.co.uk/class-finder

we have a website that uses google places to allow selection of a location. At some point last year i think the google places api stopped working (the location finder no longer suggests locations). We need to coding on the back end of the website to be fixed to allow locations to be suggested and selected from the google drop down. As an additional thing, we want the code on our website to be modified (in the same two locations) to ensure that if enter is hit before a location is selected then the location on the input is set to the first option suggested by google places rather than "null" as it defaults to at present. One location entry is customer facing at [login to view URL] the other is hidden but is substantially the same.