We have investigated multiple reports of an expired certificate in our certificate chain and can confirm that this is the case.
The expired certificate is one issued by USERTrust RSA Certification Authority. Despite a successful renewal of the wildcard domain certificate on 22 April 2020, an additional certificate seems to have expired today, 30 May 2020.
This is causing issues when curl attempts to access our APIs over https. SDKMAN relies heavily on curl for all it's API interactions.
A temporary workaround is to allow insecure SSL access for curl, although this is not advised unless absolutely necessary. See our website for more details about the `sdkman_insecure_ssl=true` config setting: https://sdkman.io/usage#config
Further information about the expiration of this certificate can be found here: https://support.sectigo.com/articles/Knowledge/Sectigo-AddTrust-External-CA-Root-Expiring-May-30-2020