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This is only possible with standard form, not with a carousel

There is no standard solutions for this.
But you may be able to do this with a table.

Right click the form and select 'Arrange objects' in the context menu.

Great!

Maybe you have moved the project, but have not included the project folder with the images? Or maybe the new version does not have access to the folder? For example, if you use the sandboxed (Mac) version then access is restricted by the system. You can update the path of the images with the Asset M...

Seems that "//do something" is fired only when the toast has being hidden by the user but not if the toast is not even shown because the cookie has not expired yet.

Correct.

See also:
https://getbootstrap.com/docs/4.3/components/toasts/

What's new in 7.1.1? - Fixed: Issue with Breadcrumb padding. - Fixed: Crash when adding images to the Photo Album. - Improved: Form validation in Master Frames. - Improved: Increased maximum margin values to 9999 (instead of 99). - New feature: Added log level option to FTP/SFTP publish settings. Th...

Note that ‘Arial’ the base font, it is the default for all objects. So the font needs to be installed otherwise some features may not work.
In your project ‘Arial’ is set in Images (default watermark font), menubar and form elements.

If you install Arial then you should no longer get the warnings.

It is possible with custom code. For example: <script> $(document).ready(function() { $("#Toast1").on('hidden.bs.toast', function () { // do something }); }); </script> Note however that I cannot assist you with writing custom code. Alternatively, you can try the dialog which does have a 'close' eve...

Does it avoid reappearance after closing the toast?

yes

Can I trigger actions on "close toast"?

No, there no event for this.

Can "close toast" be used with a link?

No

Can I copy the settings from the .Quick 'n Easy Web Builder 6 settings file the same way as I could from V5 to V6?

Yes, see also this related FAQ:
http://www.quickandeasywebbuilder.com/f ... 10&t=43939

To be able to help you, I need a copy of the project.

I'm sorry, currently the margin cannot be bigger than 99.
I usually use a (transparent) line or shape to create a spacer.

You will have to add extra content, with the same height as the footer.

I'm sorry, that is not how it works. A fixed footer will always be visible. It's either fixed or floating.

To make make sure that the bottom of the content is also visible, add extra content to the page. For example, add margin at the bottom of the last element.