Embedding the board.net boards stopped working on Chrome

I had been embedding the board.net boards for some time and suddenly we are getting the following issue:

--POPUP-- Warning: it appears that your browser does not have cookies enabled. EtherPad uses cookies to keep track of unique users for the purpose of putting a quota on the number of active users. Using EtherPad without cookies may fill up your server's user quota faster than expected.

--EMBEDDED BOARD.NET BOARD--

An error occurred The error was reported with the following id: 'xxxx'

Please press and hold Ctrl and press F5 to reload this page, if the problem persists please send this error message to your webmaster: 'ErrorId: xxx URL: https://board.net/p/xxxxxx UserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/84.0.4147.105 Safari/537.36 Uncaught TypeError: Cannot read property 'setStateIdle' of null in https://board.net/javascripts/lib/ep_etherpad-lite/static/js/pad.js?callback=require.define at line 3'

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Further details:

1. Issue not appearing on Firefox but latest Chrome
2. Cookies are enabled
3. Cookies have been cleaned and issue persists
4. Same browser can successfully open the same board directly on board.net
5. CTRL+F5 does not help

Is there anything we can do to make this work (again)?

Best regards, JS