When I try to use Fill and Sign it says retreiving information on the right hand side and won't let me sign anything.

Where are you using Fill & Sign?  In the web (Adobe Document Cloud https://cloud.acrobat.com), in Adobe Reader or Acrobat DC, or in an iOS device/app?  Also what Operating system and version are you using?  If it was in the web which browser and version?

Try restarting whichever application you were using Fill & Sign in and make sure the internet connection is working when opening Fill & Sign.  With a bit more information we should be able to help.

Thanks,

Josh