Have you clicked on the quest? If he is an option then you should be able to do it whether or not you have the regular access. Please let me know if this is not the case so I can alert a programmer.

Ok letting them know now!

I have reported this but I do want to point the below out.

"I've increased the odds of getting the map pieces via random event (which users who already have the map will sell and with more going out means they'll go lower in price). New users can make sP by doing Sarah quests and playing various games. Again, I strongly want users of all type to get the map so they can participate in things like Keelhauliday, have access to shops like the Freylise and Rathskeller, etc. We have the sP guide on the help page for everyone to use to figure out how to make sP rather quickly. I'm going to do a more in depth new user guide that should help people out too!"

from page 3 of Shinwa Quest + Quest Widget Updates

It MAY be something that won't be fixed. But still looking into it.

Yeah I had just found that xD pokes above

Not a problem! I have confirmed though that they are trying to get more people to complete the map. Amber has also confirmed that she made the RE more common so prices should go down even more even though it shouldn't be too bad right now.

locking as this is confirmed not a bug!