I uploaded my SVG logo etc. according to the below instructions, and it worked just fine, but then disappeared?
https://www.adlyticmarketing.com/blog/use-an-svg-logo-in-squarespace#Squarespace_7.1_Code
https://www.adlyticmarketing.com/blog/use-an-svg-logo-in-squarespace#Squarespace_7.1_Code