1) You change you Metatags in Admin's Preferences: Meta Tags and Footer:

/modules/system/admin.php?fct=preferences&op=show&confcat_id=3

2) Regarding email, it seems like you have wrong configuration of your email. You can update the setup here in your Admin's Preferences: Email Setup:

/modules/system/admin.php?fct=preferences&op=show&confcat_id=6

But you have to make sure that the email itself is working on your server.

I highly recommend the XOOPS Operations Guide to learn more about XOOPS Admin features.

Is this with me okay , Fernand