After 2 factor redirect it send me to server name and not FQDN

After 2 factor redirect it send me to server name and not FQDN

Hi, i have modificed the certificate for a local wildcard ... *.contoso.com

i enter to the server as https://pmp.contoso.com:7272 and the certificate is OK

When i authenticate and use 2fa (Duo) it send a websdk request, and after that returns to the platform ... but it returns as https://pmp:7272 (withouth the contoso.com)

how can i solve this ?? 

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