Let's Debug

Test result for www.tenantcheckni.co.uk using http-01

No valid A or AAAA records could be ultimately resolved for www.tenantcheckni.co.uk. This means that Let's Encrypt would not be able to to connect to your domain to perform HTTP validation, since it would not know where to connect to.
No A or AAAA records found.

Submitted Feb 14 15:40:38 2022. Sat in queue for 41ms. Completed in 3s. Show verbose information.