Support

For the mySites.guru connection error, this is a known issue: the connector plugin needs direct web access to a .php file that Admin Tools' Frontend Protection blocks by default. To fix it:

• Go to Components → Admin Tools → Server Config. File Maker
• Scroll to "Allow direct access, including .php files, to these directories"
• Add a new line: plugins/system/bfnetwork
• Scroll to the top and click Save and Create .htaccess

For the 403 error when saving Admin Tools settings, since this affects saving configuration generally (not one specific feature) and started right after a Joomla update, we suspect your host's own web server protection — most commonly a mod_security2 ruleset on Apache. Because Admin Tools' settings are security-related, some of the values you save (e.g. certain WAF options) can accidentally match a pattern in the host's ruleset and get blocked before the request even reaches your site.

Could you please contact your host and ask them to check their mod_security (or equivalent) logs for a blocked request around the time you tried to save, and mention which page/URL you were on in the Admin Tools backend? They'll be able to identify the specific rule and add an exception for it.