Please fill out the fields below so we can help you better. Note: you must provide your domain name to get help. Domain names for issued certificates are all made public in Certificate Transparency logs (e.g. crt.sh | example.com), so withholding your domain name here does not increase secrecy, but only makes it harder for us to provide help.
It looks like your cert is created using cPanel. See your cert history here
And, the most recent cert was created just a few days ago. But, it did not contain your landlordportfolio.co.uk domain name like the cert that expired 8 days ago.
This is best handled by asking your hosting provider. This is caused by some misconfiguration of your cPanel or hosting setup.
I also cannot connect to your site using HTTPS. That is not a problem with your certificate. It is, again, a problem with your server configuration.
Hey Mike, thanks so much for your reply. You're talking to an absolute technophobe here! What are my next steps? To find out who hosts our server and approach them? What happens after that?