[solved] Civi thinks it's on a different domain - preventing any action

[MtnPavlas]

An urgent ask for help please ;-)

We've developed our non-profit's new website on a a subdomain trails.evergreenmtb.org and now switched the domain so it's evergreenmtb.org
First I noticed something was wrong during a smoke test when I tried processing a donation payment - got a redirect loop error message and noticed in the address bar the domain changed to trails.evergreenmtb.org/...

So I started looking in the back end to see what config I may want to adjust but every time I hit any of the action buttons (e.g. "Cancel") in any of the config screens, it tries to redirect me to trails.evergreenmtb.org/administrator/?option=com_civicrm&task=civicrm/admin/setting/<whatever page I was on>

Where can I look for adjusting the domain URL? I've looked everywhere, even done d/b search, deleted the cache records, etc.

Just pushed the live button without an option to go back - any help will be extremely appreciated. Thanks much.

[JonGold]

Have you checked civicrm.settings.php and changed the BASE_URL there?

Other than that - check the Administer menu > System Settings > Directories,  Administer menu > System Settings > Resource URLs, and lastly,  Administer menu > System Settings > Cleanup Caches and Paths.  Clear the cache again after you've made changes!

[MtnPavlas]

Thank you so much ... the civicrm.settings.php file is what I was missing. I've now changed it there but when I try to do the update the the Source URL's ... once I click Save it tries to redirect to https://trails.evergreenmtb.org/administrator/?option=com_civicrm&task=civicrm/admin/setting/url

why in the world it keeps bringing trails.<domain> still

QUESTION: which table could I adjust the Source URL's?

I'll keep searching - thank you so much

[MtnPavlas]

OK, my bad... had to update the root domain in two locations (Joomla site):

administrator/components/com_civicrm/civicrm.settings.php
and in
components/com_civicrm/civicrm.settings.php