Redirect rule not works from external

I have deployed a Vuejs app on netlify (https://depoapp.netlify.app/)
vue-router is enabled on hash mode.
I also have a _redirects file with following rule:
/* /index.html 200

This works fine while I’m routing on my app.
But the problem is when redirection is from external.
A bank gateway will redirect user to /verifyPayment/id with a POST method.
But the redirection rule is not work and netlify shows a broken url error.

hi there, before we dig in, did you see this brand new guide on debugging redirects?

I strongly suggest you give it a thorough read through and see if this fixes your problem:

if not, please post again, and we’ll try and troubleshoot.