the paper towel method needs to go away and be forgotten about!!..
probably your reason why, and too much handling..
i have 100% success still to this day germinating by putting seeds in a glass of room temp tap water with
hydrogen peroxide around a strength of
6-8% and let seeds sit in there for 10-12 hrs, doesn’t matter if they sink or float..
in the meantime i’ll get tiny shot glass size pot/cup fill with
promix hp or any medium, near the top where the seed will go i make a bed of peat, when 10-12 hrs is up i’ll scoop seed out of the cup with a spoon and place on peat bed and cover up with more peat and
promix..
put that on a tray with holes or something to keep it with something between the seedling and the heating mat and put under a light with normal hrs of 18/6 and plug the heating mat into timer to come on with lights on and off with lights off..
i’ve gone 6 weeks without ever touching the seed or plant with my hands or fingers..
not that it matters, just my little challenge of how long i could go without ever touching the plant..
the paper towel probably ripped off root hairs.. that method was ok back in the day when seeds were free in a bag of weed you bought, but now paying for seeds like it is, No way in hell should seeds be germinated in a paper towel..