Thank you for the replies. The enqueuing code you provided lost connection to my child theme css, so I left it as it was.
I have a follow-up question, however: In addition to the royal theme and royal-child theme (active), there is a “verkkolahja.fi (KMS update)” theme in the wordpress appearance menu. Its version is listed as 2.52 and it has the royal theme thumbnail picture. It is not active and it doesn’t show up in the themes folder via FTP. I don’t know what it is – Is it made by 8theme – or has perhaps a previous developer that I have hired created it for some reason? Do you recognize such a theme’s purpose? Do you think it’s OK to remove it?
There is also another theme that only shows up via FTP connection, called “royal-updated”. It has a last modified time stamp in 2016. Do you recognize such a theme and do you think it’s OK to remove it?
I removed both themes on my staging site and everything seems to run without problems. I just want to make sure that those themes don’t serve any purpose that you know about.
