Issue When requesting a wildcard Lets Encrypt a single domain cert is issued

[Rowan]

At first I installed a single domain certificate. However the customer requested a wildcard due to the use of dynamic subdomains. When I unassigned the certificate and removed the DNS record I created a wildcard subdomain and requested a new *wildcard* certificate. However, no wildcard certificate was installed. Instead i got the single domain certificate over and over again.

How can I install a wildcard certificate properly?