WordPress Jetpack Admin Backup: For When There are Problems

I’m a big fan of the Jetpack WordPress plugin. I support it in all of my WordPress themes, and have even contributed to its development. However it’s not perfect, and I have recently had some issues with the new React powered Jetpack admin not letting me change site settings. I have been getting the error:
Notifications failed to activate. SyntaxError: Unexpected token < in JSON at position 0
Now as far as I can see the issue seems to be with the new admin loading resources from http – when using a https site. However the team at Jetpack support have been unable to reproduce or fix it – they’ve been able to see the issue on my site (I’ve given them admin access to a site with the issue) however they have been unable to diagnose the problem, so it still happens.
Then one of the support agents gave me a quick tip. The new React powered admin is likely what’s causing the problem – so why not use the old settings admin? It’s still there in the plugin!
So, if you’re having a problem changing the settings on your Jetpack powered site you can go to the following url and manage the settings as you used to:
/wp-admin/admin.php?page=jetpack_modules
I’ve now used this on two
Source: https://managewp.org/articles/15162/wordpress-jetpack-admin-backup-for-when-there-are-problems

source https://williechiu40.wordpress.com/2017/05/20/wordpress-jetpack-admin-backup-for-when-there-are-problems/