List Block won't display on iPad despite working on both desktop and phone

I have a list block on the home page, and essentially the same list block on another page of my Softr app. I tested it on my 4th Generation (2020) iPad Pro (12.9") a couple of months ago, and the list block with 50 items loaded, although it took a couple of times before the audio files in each card in the block would load. But I checked again today, and now the list block won’t display at all. Instead, it shows a loading animated icon for two seconds and then it goes away without displaying the list block, and displays the next block, which is a CTA block with text.

I have checked/tried:
• Yes, the tablet view is enabled in Softr - in fact, the desktop preview of the tablet view of the page looks as expected
• Does not display in either Safari or Chrome - both of them show a loading icon for two seconds before ceasing trying to load, and then displays the CTA block below the list block
• Neither the home page nor the secondary page with nearly identical list blocks will load the list block; and both pages do this whether it’s Chrome or Safari.
• I have tried clearing Safari’s cache, no difference.
• Chrome is a new install on the iPad.
• Wifi/internet is fine
• I have tried changing the number of items in the list block to 10 and then to 1 - no difference; still shows loading for 2 seconds then displays the CTA block below.
• I have tried adding a “List with horizontal cards and visible button” but that does not display either
• IPadOS is 16.2

What is going on here? I am at my wit’s end trying to figure out why the list block has stopped showing up on my iPad, and I want to display my app on my iPad at a tradeshow that starts in 3 days. Any help is hugely appreciated.

Preview of tablet view on desktop:


List Block not displaying on 2021 iPad in either Safari or Chrome:

More info about this mystery:
I discovered that one page in my app with three different list blocks WILL display the list blocks on my iPad. Another page with two different list blocks, separated by a List Details block will not display the list blocks. Instead of displaying the list blocks, it shows the same behavior as the pages that won’t load the list blocks, namely the circular animated loading icon for two seconds, before giving up on displaying them, and only displays the List Details block.

I noticed that on the page that successfully displays three different List Blocks on my iPad, I had the Visibility set to Everyone (but the page is only visible to Logged In Users), whereas the pages that don’t display list blocks on my iPad, I had Visibility set to Logged In Users only. That shouldn’t make a difference on iPad displaying, but I am desperate to get this to work on my iPad, so I tried switching the other pages’ Visibility to Everyone, but that made no difference.

To reiterate, this app works on desktop, works on iPhone, but 3 out of 4 pages with List Blocks will not display the List Blocks on my iPad.

I discovered the solution, although I don’t know why this fixed it. I tried opening the site on a newer iPad, with iPadOS 18.5, and it works. Next, I updated my older iPad to iPad IOS 18.5, and presto, all of the pages with List Blocks now display as expected.

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