Adaptive

Thank you so much!

You use incorrect tag for nth-child, it should be for <li> tag, not <a> tag 
[data-section-id="65c4fccdab34750b55f83034"] li:nth-child(1) a.portfolio-hover-item  

Styling options are different, certainly, but you have more options for content. An alternative would be just to lay out the page with image and text blocks etc.

No, not easily, though you could use an auto layout grid list:
https://support.squarespace.com/hc/en-us/articles/360057763852-Auto-layouts

The easiest way to do this is to set up that pageview as a conversion event in Google Analytics. Once that's done, you can import that conversion event from GA into Google Ads, and then reference it in any campaign that is optimized for conversions.
The mechanism for doing that depends on whether you're using GA3 (Universal Analytics) or GA4. Happy to help more if you need it.
- Ed
--
Blue Hills Digital
Support with website optimization, SEO and finding a digital marketing strategy that works.
Latest resource: Squarespace SEO Services

It depends 🙂. How was the certificate issued to them?
If it was ordered as a Digital Product then it will be shown in their orders panel of their profile.
If it wasn't supplied in this way, then it won't be possible. You cannot currently curate content that is specific to a Member profile.

Add to Design > Custom CSS
/* tablet */ @media screen and (max-width:991px) and (min-width:768px) { /* copyright text */ div#block-yui_3_17_2_1_1616161698674_108088+.row { .span-6:first-child { width: 100%; } .span-6:last-child { display: none; } } } /* Mobile logo size */ .Mobile-bar-branding-logo { width: 150px; } /* Mobile-Our brands logos */ @media screen and (max-width:767px) { div#block-5bf5c9756dfdd640c822+.row>.col { width: 50% !important; float: left !important; } div#block-5bf5c9756dfdd640c822+.row>.col { clear: left !important; } }  

Do you want to handle these?
Site URL – https://cylinder-capybera-m75y.squarespace.com/
1. (Tablet-Footer) Make copyright text one line?

2. (Mobile-Header) Change logo size?

3. (Mobile-About us) Change to 2 logos/row?

Hi. It looks fine. Did you solve this?

Use this code
div#page-section-607eb92910485805e7899ebe .image-block-wrapper { border-top-left-radius: 20px; border-top-right-radius: 20px; }

That strange. 
Not sure why, but items 1 and 2 have some broken code.
That kept me from checking out
Remove code I sent above
Add this to Design > Custom CSS
h3.portfolio-title:after { content: "Button"; display: block; background: white; width: 100px; color: black; text-align: center; margin-top: 10px; border-radius: 20px; }  

Video banners don’t always display on mobile devices and it can sometimes feel like hit and miss because there are so many (constantly evolving!) factors that affect whether the video will play. Some are OS based and others are browser based, including connection speed, battery level and video embed attributes.
If the fallback image loads in place of the video, it's probably one of these factors. However, if neither the image or the video loads, you may want to reach out to Squarespace Customer Care to help you troubleshoot.

Which image did you add this?

Try edit description, use HTML tag, for example image 1, you can edit description to this
Because one silo doesn’t suit all, our extensive range includes over 200 models with varying designs <a href="https://google.com">Button</a> Then let me know. I will test code to make a tag to button.

Same button text on all items or different?

Hi. Add to Design > Custom CSS
/* Footer input */ footer.sections input.newsletter-form-field-element { padding-left: 0 !important; }  

Hi. The url doesn't exist.
This is possible.

In the circumstances @Adaptive you'll probably want to set the minimum height of the text. That way, the buttons are also aligned.
For example, this CSS would probably work at the maximum width, but you'll need to wrap a number of these in media queries to adjust the height at smaller widths:
#collection-5df0cfba33e7090f1f46f853 .image-subtitle-wrapper {   min-height: 134px; } The reference to '#collection' is there to ensure that this only affects this one page. Anyone else using this would need to adjust the collection ID accordingly for their site. 
Here's a media query example for anyone who needs it. 
/* On screens that are less than 768px wide */ @media screen and (max-width: 767px) {   [the css goes here] }  

You can set fixed height, or min-height for all blocks on that page.
For the community to help, we generally need a working link to the page on your site.