It all depends on the java version you have, can you tell us which exact version(s) you have? So we can help better. The new jagex launcher works best with java JRE 11
Atm it's possible to hop if there is no available ore in any of the rocks you're mining, I can add a method to hop if a player stands in your tile though, good idea Will be added in next version asap.
How about now does it appear?
I can share my settings with you just tell me which npc youre fighting and I will send screenshots
EDIT: There is also a button to enable Looting bag in fighter setup -> Loot -> scroll down to the end