Twitter-Share-Button disappeared (9/4/2020)

Site URL: https://www.randombranding.com/tweetables

All twitter-share-buttons disappeared from my "tweetables" page, where people should be able to find a quote they like and click-to-tweet.

I've used twitters own code (from their developers site here: https://developer.twitter.com/en/docs/twitter-for-websites/tweet-button/overview

The page worked perfectly fine, with all the code blocks carrying the twitter share buttons, and publishing on twitter as intended (see example here)

On September 4th, 2020 all buttons just disappeared. Other websites seem to still carry them, so I presume it's a Squarespace issue?

Here's an example of code I've used to make a quote "tweetable":

<p class="tweetable"> “I've learned that people will forget what you said, people will forget what you did, but people will never forget how you made them feel.” — Maya Angelou <br>
<a class="twitter-share-button" 
	href="https://twitter.com/intent/tweet?text=&#34I&#39ve%20learned%20that%20people%20will%20forget%20what%20you%20said&#44%20people%20will%20forget%20what%20you%20did&#44%20but%20people%20will%20never%20forget%20how%20you%20made%20them%20feel&#46&#34%20&#8212%20Maya%20Angelou"
   data-url="randombranding.com"
   data-hashtags="branding,perceptionisreality,UEX"
   data-via="randombranding"></a>

Here are the class definitions:

.twitter-share-button {
      float: right;
      margin-top: 9px;
}
.tweetable {
  display: block;
  background: white;
  padding-top: 15px;
  padding-left: 15px;
  padding-right: 15px;
  padding-bottom: 45px;
  margin-top: -10px;
  margin-bottom: -10px;
  font-family: SF Pro;
  font-size: 0.9em;
  border: 0.5px solid hsl(0, 0%, 73%);
}

Anyone know what I can do to make the buttons re-appear?

Than ks in advance for any pointers!