I ran into this yesterday (3-28-18)…the current version of Qbundle does not have the option to import your plot file in the database tab. This is a known error (from my research) that will be fixed. But in the mean time, you have to uninstall the current version and roll-back to V1.9. That version will allow you to import your plot files. Once done, you may upgrade to the latest version of Qbundle.
As I’m new, I could use a coin to join a pool…
I am also looking for people to join in on helping new users get their first coin on the forum. If you want to contribute, but don’t want to be searching for new people, I run a fund that is solely used to send new users their starting coin. I am very frugal with this fund, and make sure everything is put to good use. The address for this fund is BURST-FFLQ-3QZJ-267R-F3QBX