there is a BUG in the plugin that will allow you to add 1 or 2 devices then no see any more new ones. here is how you fix it
1: goto your config folder under homeseer
2: look for the config file called hspi_bt
3: open it
4: cut the part at the top that starts [Network0] all the way to above [Device0]
5: paste it at the bottom of the file
6: save
7: restart homeseer.
for some reason the plugin keeps returning this to the top, when it does it stops loking for new devices when it sees this. if it happens again ( which it wil ) just repeat these steps.
I hope a fix will be made for this issue