Profile: Support
>ERR_TOO_MANY_REDIRECTS
You need to use https now.
Check if you use the store URL with www or without www, maybe you redirect the customer from https to https:\\www and back to https
Remove all callback URLs and open plugin configure page, copy callback URL from plugin configure page.
And check your store URL in the nop admin store list and in the browser.
If you use https you need to change the store url from http to https
I was a bug.
Download the new release 1.26 and upgrade the plugin.
The feed file has to have this parameter
https://support.google.com/merchants/answer/6324499?hl=en
and plugin sets the default value 28.
Google uses the value 30.
The issue could be related to Amazon PII Level
Look at here!
https://stackoverflow.com/questions/56648361/missing-buyer-address-and-name-in-getorder-method
Nop 3.90 uses old ASP.NET Core
Open the file global.asax at second instance and add space to the end of the file. Save it.
IIS will recreate the >NET cache.
>Otherwise plugin would not activate on that 2nd server.
Check if the second instance uses own cache.
The first and second instance have to use the same cache (ex. Redis).
>I tried uninstalling on server1 and installing on server2.
Install plugin on one instance and change the file plugins.json in the second instance.
But I think you will not be able to configure two instances of nopcommerce withot issues.
I tried to do it for one my customer several years ago.
Each instance has own nopcommerce task manager and this task manager works on own instance.