I am almost positive that my clients end up pressing the button to process their initial order multiple times, which causes multiple invoices to be processed by WHMCS.
Is there any way to prevent this? Such as placing some text on the order form page that says "processing your order, please do not hit the submit button again" or something?
It is very time-consuming for my clients to inform me that there are multiple invoices, and for me to cancel them.
Or am I missing this in the documentation already provided? It's been a long day, lol.