Wy new site on Magento 2.2.5 was launch www.jewelrynest.com, but it seems i am getting a problem with autorize.net and PayPal when I create an order it's going to the same page and I do not know what is the problem I put all credential
I understand your problem - can you please check var/log directory of your magento 2 ? and open the exception.log file and post the log over here ?
When you face this kind of problem ,the error log is recorded in this file so open that file and share that log with us !
so its help us to troubleshoot the issue !
Hope it helps