@lorro
For some reason the problem isn’t there anymore. I don’t know how that became. Could modifying the php.ini limit had done something or the traffic had slow down and I done the first option but I can’t be so sure if the syntax used is correct. Here’s what I’ve used for it: max_input_vars=20000.
I am having the same problem too as the title of this thread. A customer can only select some products but not all of them. The site is stlgrillzz.com. Am I the only one this is happening to on the busiest of holidays.