So you have both plants in one pot? That might be your problem, they could be rootbound. If the roots can't grow the plant will be affected. How big is your pot? I have one plant per 5 gallon fiber pot. And have graduated up from 2 gallons first grow, to 3 gallons second grow, to 5 gallons for this grow.
And I've had seeds that were a week or two behind another plant, that never caught up or caught up and passed the first plant. My last grow was 2 mystery seeds and all I knew that they were auto/fem, and they grew at different rates, one was harvested 3 weeks before the last one. You have to keep in mind that they are plants and will grow at their own rate. It's that simple.
When you got the seeds from Bonza did they specify that they were autos and feminized? I always double check to make sure of the type (auto vs photo), that they are female, THC content, height, time from germination to flower, and whether they are sativa or indica or a mix of both. I choose my seeds for the chronic conditions I need to treat with the flowers. I've never bought from Bonza before, bought from a couple of different places, one in England, another in Amsterdam and the last seeds came from Seedsman.
Maybe put them in separate pots or a much larger pot in case they are root bound, change the light schedule just in case they aren't autos and see what happens after a couple of weeks. And please just take deep breaths and relax....the stress I feel off you has to be so much worse for you.
Good luck and hopefully soon you'll have a great harvest!