"You appear to be offline"

I’ve looked through a bunch of past forum posts and it seems I’m not the only one to have this issue, but the common fixes aren’t working for me. The website keeps saying I’m offline and isn’t saving any of my progress, but I am definitely online. I’m using chrome on Kubuntu, and I’ve already tried deleting my browsing data and disabling all of my extensions, and I don’t have a vpn. I don’t know what to do, please help!