I solved this problem by adding a line of code to the wp-config.php file. Just after the lines below add this line:
define( ‘JETPACK_CLIENT__HTTPS’, ‘NEVER’ );
The final should look like this:
* @package WordPress
*/
define( ‘JETPACK_CLIENT__HTTPS’, ‘NEVER’ );
// ** My SQL…
That solved any issues. I can’t promise it won’t cause another, but for now, so far so good.