Scott is having issues with his Synology NAS. He can't access it remotely. Leo says it sounds like a settings issue and he recommends going into the router settings and see if the router can see it. Then reserve the DNS number that's listed for that Synology. If it doesn't, there could be a problem with your router or with a power surge that fried your board. But that's unlikely.
Check out this tech note on troubleshooting NAS connection problems - https://www.synology.com/en-us/knowledgebase/DSM/tutorial/General_Setup/What_can_I_do_to_troubleshoot_NAS_connection_problems
Doctor Mom also says that the Synology stores the IP in its memory if the IP has changed the router will see it, but you can't log in the http://find.synology.com/.