Please disregard the above fault as i have now rectified the problem over the weekend. But i thought i would share how i managed to get notifications working again as the problem lies within certain phone manufactures and there ROMS. My phone is an OPPO and i could only receive notifications when the BHYVE app was minimized or running, as soon as the Bhyve app is shut down then i stopped receiving any notifications (Kind of useless as thats the whole point of push notifications!)
But there is a setting within the phone that fixes the issue!! and now it works perfectly!!
Below is the link that clears up the problem and explains the issue, this problem exists on multiple phone manufacturers.
So happy now that the issue is resolved! Hope this helps you guys out for future customers that may be having the same issue!