Whenever I make changes using advanced designer, it reverts form to something I have never create

Whenever I make changes using advanced designer, it reverts form to something I have never create.

It losses the

1. Round corners
2. Form background

3. Back picture

All i am trying its to edit submit button colour 

Apologies for the inconvenience. I'm not sure but I think it has something to do with your form's cache so I've cleared it for you.

Could you please test again? You can also revert your form to a previous version if you accidentally made changes using the advanced designer.

Guide: How-to-View-Form-Revision-History 

If you need further assistance, please let us know.

Thanks, I did revet to the oldest version but still the same. 

Nope, the dropdown is still clipped

Thanks, I did revet to the oldest version but still the same. 

Apologies for the inconvenience. I have checked your last visited form but you seem to have deleted it already.

Could you please share the URL of the form you're currently working on?

Guide: Where-to-Find-My-Form-URL 

If possible, kindly share with a short video clip for us to see how your form behaves from your perspective. 

I have another question concerning Twilio widget. The drop-down box for selecting countries prefixes has scroll bars and makes it hard for the user to scroll and view the list.

I have adjusted form width etc. with no luck.

I have moved this query to a separate ticket to avoid confusion. Kindly wait for my response here.