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I have checked the email history for your email address and I can see all emails are being sent so far, you can also check it by following the guide below:
Could you please also check your spam folder?
If you find them there, please mark the emails as not spam, additionally you could also check this guide in order to get some info about why emails may not be sending: Why-I-am-not-Receiving-Email-Notifications
If the issue still persists, please try setting up your custom sender email using SMTP, this way you will be able to have more control on how the emails are sent, here's the guide:
Hope this helps.