HTTPS certificates expiring

I am getting the HTTPS certificates expiration message for my club website www.davietoastmasters.org .
I contacted my domain hosting company but they told me everything is fine on their end, how can I resolve this? Do I need to buy my own certificate and how much will that cost?

Regards,
Price

Fix your DNS settings to comply with our requirements, then let us know so we can trigger the certificate creation/renewal.

support.toastmastersclubs.org/doc/item/dns-settings-overview

It is your DNS settings that are the issue.

According to my domain host "As I can see you have couple of DNS records in your DNS out of which some are pointing to the Website and some to your Email and they are working fine as they are pointing to your Website and which is loading fine. Also your SSl is working perfectly fine. We can only correct any DNS issue if we know which DNs records needs correction. As I can see all are correct."

As you did not provide all the DNS Zone records we can only tell you what is wrong if you want to use the FTH service.

remove
davietoastmasters.org. 3600 IN MX 30 ALT2.ASPMX.L.GOOGLE.COM.
davietoastmasters.org. 3600 IN MX 10 ASPMX.L.GOOGLE.COM.
davietoastmasters.org. 3600 IN MX 40 ASPMX2.GOOGLEMAIL.COM.
davietoastmasters.org. 3600 IN MX 50 ASPMX3.GOOGLEMAIL.COM.
davietoastmasters.org. 3600 IN MX 20 ALT1.ASPMX.L.GOOGLE.COM.

add
mail.davietoastmasters.org IN A 50.19.253.65

add
davietoastmasters.org mx mail.davietoastmasters.org

As you can see below your cert will not expire until Jan 2020. We will automatically regen any cert that is properly setup to our specifications.

The email is being host by Google if I remove those records I won't get email. These settings were there from inception with no issues

davietoastmasters.org. 3600 IN MX 30 ALT2.ASPMX.L.GOOGLE.COM.
davietoastmasters.org. 3600 IN MX 10 ASPMX.L.GOOGLE.COM.
davietoastmasters.org. 3600 IN MX 40 ASPMX2.GOOGLEMAIL.COM.
davietoastmasters.org. 3600 IN MX 50 ASPMX3.GOOGLEMAIL.COM.
davietoastmasters.org. 3600 IN MX 20 ALT1.ASPMX.L.GOOGLE.COM.

Up to you if you want to use the FTH mail system or not. If you have any issues with mail your on your own.