Well, even then, try restarting and then putting down your summon sign on the lefthand side. If i can summon you, we could try it on my save, and if it does work, it certainly will in your save as well.
Aight, renew it every 15 seconds, and while you're at it, keep an eye for mine. If it doesn't work for atleast idk, 5mins? Then feel free to give up. :|