Hi, thanks again for getting back to me, there is an update:-
I have sorted the security cameras, there was a change of IP address on the xpenology server, now rectified. However the main problem is still there, I have full access to my server via my local ip address but can no longer get full remote access. Current lan IP has not changed, and when I check my No-ip account, lan ip is correct and active., indeed working perfectly on another server
Update
Have just look at my port forward on my router, and notice a chage of ip on my server port, which I have sorted, now have 90% back working, just the DSM audio app which is not opening, so I can live with that.
Looks like I can now close this thread
Appresiate and thank you for helping me.