Fatal error on plugin activation

Hi there!

Thanks for making this new plugin – great idea! 🙂

However, on activation I got an fatal error because of function is_plugin_active doesn’t exist. I commented out the lines in your plugin main file (around line 216) and all worked.
What causes the error is described here: https://wordpress.stackexchange.com/questions/9345/is-plugin-active-function-doesnt-exist/9350

…this function is only available in wp-admin and only after the hook “admin_init” has fired.

Also when WPML and Elementore were already active I got error.

So would be great if you could fix this.

Another suggestion:
Would be nice if you could support other plugins that offer language switchers like Polylang, TranslatePress, MultlingualPress etc. Would make total sense 🙂 Thanks in advance!

–Dave