Dear Community !
I Have a Production instance of Marketing with an Event Portal running on default subscription center. Earlier, I was able to run several email marketing campaign using this default subscription center and some of my leads, unfortunately, unsubscribed from my list. That way, I know it still works. But all of sudden the unsubscribe link doesn't work and I got notified by one of my client.
After checking the issue and encounter several workaround in the forum, I still couldn't figured out what happened.
I've tried to add entry into Site Settings according to another thread --> Http failure response for Event Portal w/ custom domain - Dynamics 365 Marketing Forum Community Forum although mine is not custom event page.
Also, refreshing the portal. still doesn't work.
Here is the link to my default subscription center https://metisc.microsoftcrmportals.com
Here is the unsubscribe link https://metisc.microsoftcrmportals.com/manageSubscriptions?msdynunsubscribeid=Bhx6GEsXx2Mgd8X145T7y5GuNbmgmTYwhGh7x9mO754x
Any help is appreciated. Thank you very much