Settings page broken with lots of error!

Successfully installed and activated. When i went to Settings Page and got following list of error:

Notice: has_cap was called with an argument that is deprecated since version 2.0! Usage of user levels by plugins and themes is deprecated.

Use roles and capabilities instead. in \wp-includes\functions.php on line 2908

Notice: Undefined index: googlefonts_save in \wp-content\plugins\wp-google-fonts\google-fonts.php on line 926

Notice: Undefined variable: message in \wp-content\plugins\wp-google-fonts\google-fonts.php on line 953

Notice: Undefined property: stdClass::$error in \wp-content\plugins\wp-google-fonts\google-fonts.php on line 202

Notice: Undefined index: googlefont2 in \wp-content\plugins\wp-google-fonts\google-fonts.php on line 337

Notice: Undefined index: googlefont3 in \wp-content\plugins\wp-google-fonts\google-fonts.php on line 337

Notice: Undefined index: googlefont4 in \wp-content\plugins\wp-google-fonts\google-fonts.php on line 337

Notice: Undefined index: googlefont5 in \wp-content\plugins\wp-google-fonts\google-fonts.php on line 337

Notice: Undefined index: googlefont6 in \wp-content\plugins\wp-google-fonts\google-fonts.php on line 337

Thanks for your nice plugins and work. ??

https://www.ads-software.com/extend/plugins/wp-google-fonts/