your tuner should have a single contact for end-fed type antennas, might have a jumper you have to remove. The coil should be on the far end from your radio - tuner
See belowyour tuner should have a single contact for end-fed type antennas,.... edit...
Yeah but the antenna has a so 239 connector???
See below
Who ever built it failed to provide a counterpoise wire on the SO 39 connector "ground" side, from the pic ,I can't tell if the SO 239 has screws holding it to the rectangular center piece.
It's only half an antenna as it is built. try adding a counterpoise wire to one of the screws.