Hello,
Thank you for your reply. When I click the Customize button while on a single post, I get an error at the top of the page (instructing me to see errors in console and paste them in forum here), and I do NOT get the tabs at the top left of the screen (sitewide, all posts, this post).
Here are the console messages (example.com substituted for domain name):
https://example.com/wp/wp-content/plugins/addons/assets/czr/css/czr-control-footer.css?ver=1488663555 Failed to load resource: the server responded with a status of 404 (Not Found)
load-scripts.php:9 JQMIGRATE: Migrate is installed, version 1.4.1
bc_rb_global.js:10 yes
jquery-migrate.min.js:2 JQMIGRATE: Migrate is installed, version 1.4.1
jQuerySharrre.min.js Failed to load resource: the server responded with a status of 404 (Not Found)
example.com/:413 Uncaught TypeError: $(...).sharrre is not a function
at HTMLDocument.<anonymous> (example.com/:413)
at i (jquery.js:2)
at Object.fireWith [as resolveWith] (jquery.js:2)
at Function.ready (jquery.js:2)
at HTMLDocument.K (jquery.js:2)
previewloader.js:69 Uncaught TypeError: Cannot read property 'postMessage' of undefined
at googlePublisherPluginPreviewLoader.getScripts (previewloader.js:69)
(unknown) 'webkitIndexedDB' is deprecated and will be removed in M57, around March 2017. Please use 'indexedDB' instead. See https://www.chromestatus.com/features/5775330191081472 for more details.
(anonymous)
czr-control-footer.css Failed to load resource: the server responded with a status of 404 (Not Found)