I'm looking for a way to auto-refresh POST a page. By that, I mean the browser will resubmit the form automatically, just like if we had manually clicked the "Continue" button below:
Add-ons I've tried:
However they only allow auto-refresh GET requests.
What may be a solution?
There are a number of browser automation tools which you could look at. They are mostly used for testing web applications, so they can be a little complicated (but very powerful).
Probably the best place to start is iMacros. This one is geared around recording normal user actions in a browser and playing them back.
If you find you need something more powerful, both Selenium and WatiN are very good.
In Google Chrome you should keep opened dev tools. The confirmation dialog is not displayed.