if you decide to cut your losses and look at another
I recommend this one:
" Hand strap and universal baseplate for DSLR cameras
Comfortable, lightweight strap conforms to hand for solid grip
UltraFit Layered-Pad Technology™ provides support without bulk
Integrated UltraPlate baseplate is Arca-Swiss compatible
Versatile baseplate includes two 1/4''-20 attachment points
Supports sling strap or other camera accessory "
UltraFit Hand Strap with UltraPlate - DSLR & Mirrorless | JOBY
it is available at several vendors
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hand straps are being discussed in this thread:
.:
K1 Grip Strap - PentaxForums.com