Hellarad

Hi everyone. The font on my site built on the nueva template suddenly is showing a different font. in the editor it is correct, on the live site it's a different, serif font. Screenshots are below. I haven't made any changes to the site in the time this happened. There is some custom code connecting acuity to zoho, but it's not related to styles. I did start the process of transferring the domain to Squarespace, but I don't see how that's related to templates and styles. Any ideas? Many thanks! Michael