renew a HTTPS certificate for your custom domain

We have received the following warning when we open up the administrator view of our clubs site:"The FreeToastHost server was unable to create / renew a HTTPS certificate for your custom domain:*** This means that you may not be able to access your website using https:// with your custom domain name after any existing certificates expire.Possible causes may include:a. Your custom domain's DNS records are set up incorrectly on your registrar's website.b. You are using domain forwarding--it is *not* supported.c. Your custom domain has expired. (If so, you must address this with your registrar.)d. The custom domain listed in the admin console is no longer being used.e. The FTH server was temporarily unable to connect with the free LetsEncrypt! service to create the certificate.(If so, this could be resolved automatically in a week.)*** Note that the system may remove your custom domain from the database to prevent further invalid attempts at cert renewals."We have tried all of the recommended actions (Go-Daddy; Who Is; DNS Stuff)  and frankly don't find any obvious problems. However, I don't know what to do next.Jim Sutton  206-780-1621Toastmasters Club 1154Poulsbo, Washingtonhttps://www.littlenorway-tm.com/

Please check the documentation here:   support.toastmastersclubs.org/doc/item/dns-settings-overview
Refer to the table of required records - you're missing the two 'A' records (WWW and mail), and you should get rid of the MX 0 record