I have the same problem with a man in this thread https://techguy.org/1189968
i've tried all solutions that he tried, and i got the same result with him; it didn't changed anything
the man(volunteer) gave solutions that we should go to services and try to running these thing;
Router Internal & Router Edge are configured with OSPF. Both are Learning Routes from Each other.
Router Edge is connected with Internet with Static IP and There is an IPsec Tunnel between Router Edge and Router Remote. Remote PC can be Ping and Accessed by Router Edge without any issue.