Cerificate renewal faild with During secondary validation:

[tjtharappel]

our domain is apps.factnet.co.in:

I ran this command:
sudo certbot certonly --nginx then I got the following error message
Domain: apps.factnet.co.in
Type: unauthorized
Detail: During secondary validation: 61.1.183.84: Invalid response from http://apps.factnet.co.in/.well-known/acme-challenge/vTs41fA2LQVOOK4A1VuAurjdjUYznsxhg55W4KgkiDE: 400

My web server is (include version):

The operating system my web server runs on is (include version):
Ubuntu 20.04 with nginx server

I can login to a root shell on my machine:yes
The version of my client is certbot 2.10.0
I run all the options from lets debug then shows everything is ok

[orangepizza]

that means primary vantage point saw right result but some of others seen wrong message : do you happen to block AWS or some nations?

[tjtharappel]

@orangepizza

but some of others seen wrong message :

At present not blocked to any nations

[orangepizza]

for some reason your website thinks port 80 is https port hand prints error 400

[tjtharappel]

Yes. I temporally disabled the https. now am able to renew the certificate. Thankyou @orangepizza