I have an issue for the past 2 days where all orders done through Authorize.net are hanging with the "please wait" message.
Customers do get charged but they don't know it since they don't arrive on the "thank you" page, so they press a few times on the submit button and they end up getting charged multiple times.
I saw many posts on the forum with similar problems, tried every solution that anyone suggested but still couldn't get it resolved.
I didn't make any major changes to the site excet some CSS design changes.
Using opencart ver 22.214.171.124
Any help will be appreciated