Postal Life Insurance [Pli] — Online PLI Login

I registered with the post office and got my customer id and generated password however recently whenever I use my customer id and password it says "invalid customer id and password".

I tried

1. Using forget password and create new password
2. i used forget customer id and got customer id just to verify its the right one
3. Using 2 laptops
4. I used 2 different mobiles

But it doesn't let me login in to my PLI policy something is wrong on your side.

Please can you help and resolve it