Squarespace is clearly not paying any attention to this thread. I agree the sol'n probably requires custom code which requires pmt for their "premium business" tier.
My site is not indexed at all - and I'm getting zero guidance from Squarespace in terms of remediation - so if I was paying for Google Ads it's possible that I'm literally getting nothing in return due to the fact that Google won't index my site and Squarespace won't help.
That's enough for me to quit Squarespace. I've been with them for a decade. Time for Weebly, Jimdo, Strikingly, Wordpress... literally anything but Squarespace!