Do you recall what version you had before you installed Firefox 53? You often can learn this from the Troubleshooting Information page, where there often is a "Show Update History" button. Either:

• "3-bar" menu button > "?" button > Troubleshooting Information
• (menu bar) Help > Troubleshooting Information
• type or paste about:support in the address bar and press Enter

In the first table on the page, can you find that button?

In case those add-ons were disabled or stopped working due to incompatibility, you might try updating them. You can view, disable, and often remove or update extensions on the Add-ons page. Either:

• Ctrl+Shift+a (Mac: Command+Shift+a)
• "3-bar" menu button (or Tools menu) > Add-ons

In the left column, click Extensions. Then check for a small button above the list with a gear/wheel/cog icon and click that and try "Check for Updates". Also, make sure the extensions are still listed and not disabled. If they are disabled and can't be re-enabled, click the More link for the extension to check for any explanation.

Any progress?

Separate Issue; Update your Flash Player Version: 25.0.0.148

https://get.adobe.com/flashplayer/ Direct link scans current system and browser Note: Other software is offered in the download. <Windows Only>

https://get.adobe.com/flashplayer/otherversions/ Step 1: Select Operating System Step 2: Select A Version (Firefox, Win IE . . . .) Note: Other software is offered in the download. <Windows Only>