Circular login issue

We have a page with custom capabilities defined (https://swpp.org/2018-conference-materials) that URL redirects successfully to the Member Options page which directs user to login.

From member options, user goes to Login page (/wp-login.php ) upon entering user credentials (username: 2018Conference password: Conference2018 ), user is correctly routed to the welcome page (http://swpp.org/welcome/) which is displaying the correct content based on the user level and custom capabilities defined for the user and the page.

Clicking on the 2018 SWPP Conference Documents link should take the user to the 2018-conference-materials page and display all the page content.

Instead, the user is routed back to the Member Options page at

Process was working prior to migrating the site to a new instance on the same server. Same PHP version, Same wordpress version, etc.

We have checked the user credentials, tried with new user, disabled other plugins etc. Looking for assistance on resolving the circular login issue. Thanks

I may point you to two possible problems:

Looks like the link at “Welcome” page is wrong. If I log in, and then go back here and use this link, I see the list with materials.

Another (or simultaneous) possibility is somewhere to stay wrong [s2If conditions].