It's up to devotee. I thought he had fixed the problem 3 months ago... (SSL certs are supposed to be auto-renewed every 3 months, but last time it happened this way, and devotee said he fixed it.)
Note: alternatively, you can use Firefox and when it gives you the error, click on Advanced, Add an exception, and Permanently store the exception... Voilà, done, no errors anymore. Chrome, unfortunately, doesn't allow for that. :(