Let's Debug

Test result for mail.topperfloats.com using http-01

mail.topperfloats.com has an AAAA (IPv6) record (2607:f650:0:1::10) but a test request to this address over port 80 did not succeed. Your web server must have at least one working IPv4 or IPv6 address. You should either ensure that validation requests to this domain succeed over IPv6, or remove its AAAA record.
A timeout was experienced while communicating with mail.topperfloats.com/2607:f650:0:1::10: Get "http://mail.topperfloats.com/.well-known/acme-challenge/letsdebug-test": context deadline exceeded

@0ms: Making a request to http://mail.topperfloats.com/.well-known/acme-challenge/letsdebug-test (using initial IP 2607:f650:0:1::10)
@0ms: Dialing 2607:f650:0:1::10
@10000ms: Experienced error: context deadline exceeded

Submitted Mar 8 19:50:00 2021. Sat in queue for 1ms. Completed in 13s. Show verbose information.