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. https://crt.sh/?q=example.com), so withholding your domain name here does not increase secrecy, but only makes it harder for us to provide help.
Would you please provide more details? Such as what command or tool are you using to get a certificate?
Currently that domain uses a wildcard certificate from Sectigo not Let's Encrypt.
I see you have many Let's Encrypt certs both wildcard and non-wildcard. You must use a DNS Challenge for the wildcard but the others could use a different method like HTTP Challenge. If using HTTP Challenge there may be problems because your domain redirects HTTP Challenge tests to a different website.
What services does infomaniak provide for you? Are you using one of their tools to get the certificate?