Ragewolf

I was in Mt. Mortar in Johto, I found npc Admiral Squidbar in B1F. He gave options to go to Iron Island in Sinnoh. At Iron Island I wanted to go back to Johto, but the only option the npc gave me was to go to Canalave City in Sinnoh. When I got to Canalave City, the npc there only gave me an option to go back to Iron Island. My question is, how to get back to Mt Mortar or Johto? I was only able to return with an escape rope. I was wondering if there is another way incase I go back or if this is some bug.

IGN: RageWolf Server: Silver My Sentret from Kanto is stuck in my team. Thank you :}