Email not recieved

I've fixed the first issue that I emailed about
but it has caused another problem (up until now I haven't had any problems
and haven't had to look at the form because it's just worked).
*For some reason, none of the JotForm emails are getting to my email
account - ryanbetts@hotmail.co.uk - since fixing
the 1st issue. The 'thanks for submitting' email no longer reaches my
hotmail account either.*
*- *I have not changed anything with my email account and have not blocked
any emails/senders whatsoever.
I have changed the email address of the notification email to my other
email address - betts135@gmail.com - to test the email and this has worked
fine. The 'thanks for submitting' email does reach the hotmail account of
another family member that I've tested it on.
My primary email address is the hotmail account so I would like to try and
get it working again. *Emails have stopped coming through to my hotmail
account since I fixed the first issue that I contacted you about - it
worked once but I tested it a few times because I made a few wording
changes to the automatic emails - after a few submissions the emails
stopped coming. Maybe something I have done has caused a problem but I'm
not an idiot and I can't see what I might have done to cause this other
problem!?*
Would you mind having another look at my account at the 'Contact Us' form.
I don't know why these problems are happening JotForm has worked fine for
the years that I've been using it already! (The contact form has been
taking submissions because they're listed and they're being saved as PDFs
in my Google Drive)

ryanbetts@hotmail.co.uk was IN the bounce list Reason(s) : smtp; 550 SC-001 (SNT004-MC11F16) Unfortunately,

 

I had removed the email from bounce list. You can remove yourself by following the instructions provided at :

https://www.jotform.com/help/262-How-to-Remove-Your-Email-Address-from-Bounce-List

This usually happens when the messages are rejected by your email service provider. Our servers will try several times to deliver the messages for a given time-frame, but if the delivery constantly fails, it will mark it as "old", "rejected" or similar, and it will store your recipient email address in our bounce list. To prevent email bouncing related issues please read :

https://www.jotform.com/help/208-How-to-Prevent-Email-Bouncing-Related-Issues

In addition, you can find our mail server domain list from this guide: https://www.jotform.com/help/145-Whitelisting-JotMails-IP-Addresses. You may consider adding the list on your whitelist settings. 

If the issue continues, our best recommendation to avoid email bouncing issues is to use your own SMTP settings for the sender email: https://www.jotform.com/help/244-How-to-Setup-SMTP-for-a-Form

Please observe your email activity from here on. You may also check your email activity to see the status of the email deliveries from your forms by following this guide: https://www.jotform.com/help/293-How-to-View-All-Your-Form-Email-History

Let us know if you have more questions regarding the same