Okay read all answers but need to buy an auger but my twist is that the water valve was leaking and I changed it with a 1/4 turn valve does this make the problem.we were out when the prob occurred with kids home.so maybe a clog also

We don't know. You didn't say what the problem is. A leaking supply valve will not cause a toilet to malfunction.

I keep looking for a complaint here. Are you saying the toilet clogged when the kids were home alone? Hmm! Makes you wonder what went down that toilet when you were away, Purchase and use the auger and get back to me with the results. Good luck, Tom