For easy treadling check the alignment of the wheel supports with the wheel. You can unloosen the bolts securing them into the base with the 4mm allen key which came with the kit, then twist the wheel supports until the wheel turns freely & retighten.
Check that the flyer bearings are at right angles to the flyer shaft. If not twist the upright into alignment.
If you have set it up for double drive then the drive belt goes around the wheel, around the larger pulley on the flyer, around the wheel again & around the smaller bobbin pulley & tie the ends together.
Check that the bobbin rotates very freely on the flyer shaft. If not the bearings may need oiling. If in extreme cases that doesn’t help, then the bobbin bearings may need to be reamed with a 1/4″ round chainsaw file.
If you handle your Elizabeth reasonably carefully it should remain set ready to spin.