Hello faleyras,

Thanks for reaching out to us.

An issue with email notifications could be caused by several reasons:

1. Your hosting provider is blocking all 3rd party settings and only allowing their SMTP (or other) settings.
2. Your website has a PHP version of less than 7.
3. The credentials are not correct.
4. There's something else blocking the notifications from being sent.
5. If you're using Gmail, please check out this article for detailed setup instructions.

Please check these points, and let me know if you were able to resolve the issue. If you're still not able to resolve the issue, we'll need to remote into your website, and see what's going on.

Regarding the calendar issue, would you mind providing a screenshot for better understanding?

Thanks.

Hello faleyras, 

Great to hear that you were able to fix the issue with the mail notifications. Regarding the error of the arrow, have you tried the URL on the other browsers? Have you tried clearing the browser cache?

I've opened the website on chrome, but using the mobile view, I can see the arrows properly

Looking forward to your reply.