You didn't state what ios version you are using. ios8 introduced some changes. There is a Filemaker Go App that works with prior version of ios8. Take at a look at this link on the Filemaker Technical Network : https://fmdev.filemaker.com/docs/DOC-2654
If you are using ios8. There are some discussion on fixes that other user made and about using apples configuration utility.
Information about the paths :
Thank you for your post.
You can reference a local FileMaker database by using the tmp protocol. That is: fmp://%7e/<filename>
For more information, please see Knowledge Base Article #11358: