You may want to contact Nitrado Support either by calling them or creating a ticket. Only they have access to your account and server.
Here is the link-Support | nitrado.net
Thanks i will do that if it happens again. Restarting the server with the option to respawn all wild dinos seems to fix the issue at least i see otters and quetzels and equus now still no megalasaraus but i don't know if this means other dinos are now not spawning instead il keep an eye out but hopefully everything will be good now if i notice anything i will contact Nitrado. Thanks!