That's not quite unusual - modern browsers doesn't like self signed certicates, because they are not safe.
Try to use Firefox and http protocol to log into copier, then go to [Security] -> [PKI Settings], then try to remove old certificate (if there is any), and create new one - but probably it doesn't completely resolve your problems.
You can use certificate from the link below - should be better than self signed. Go to [Security] -> [PKI Settings] then import certificate from file, password: 123
Try to use Firefox and http protocol to log into copier, then go to [Security] -> [PKI Settings], then try to remove old certificate (if there is any), and create new one - but probably it doesn't completely resolve your problems.
You can use certificate from the link below - should be better than self signed. Go to [Security] -> [PKI Settings] then import certificate from file, password: 123
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