It has come to our attention many players were experiencing issues with friends and gifts on Heart of Vegas.
We are working with Facebook to get this feature back up and running, unfortunately we are not the only games/app to be affected by this issue.
As a temporary measure we have disabled the feature until we can be confident it has been fixed and we can deliver this feature as expected again.
We apologise for this as we know it is a well loved feature for free coins between friends and our team are hard at work on getting it fixed.
This issue has now been fixed and you should again have the ability to send and receive gifts