Issue with Smile Always?

Viruses and worms
1

I use an extension with Chrome, to redirect from Amazon to Amazon Smile, called Smile Always.
Recently, Avast has started blocking sites with Mal:URL hxxp://amazonforum.com with one example being Snopes.
Disabling the extension stops the issue, but I was just wondering if there’s an issue or if it’s an FP.

2
Avast has started blocking sites with [b]Mal:URL[/b]
you men URL:Mal

Anyway post a screenshot so we can see the full message avast give

3

No problem here using https://smile.amazon.com/ to pass along a small donation when purchasing items via Amazon.

4

Sorry about the typo.
I had no problems with the smile.amazon.co.uk website, but rather other websites. I had originally suspected my extension (https://chrome.google.com/webstore/detail/smile-always/jgpmhnmjbhgkhpbgelalfpplebgfjmbf), as it stopped as soon as I disabled it. I’m not sure anymore.
Perhaps a poisoned advert?

Looking at source of one of the pages shows this:

Failed to load resource: net::ERR_CONNECTION_RESET hxxps://ps.l.admedo.com/e7b7041f-8d65-4024-9168-fd38b9a62669.json

Log doesn’t show much info.
Neither do the notifications, but I’ll include the bit of log here, and attach the screenshot of the notification.

Avast Real-time Shield Scan Report
* This file is generated automatically
*
* Started on: Friday, February 15, 2019 5:35:11 PM
*

2/18/2019 12:55:04 PM	hxxps://amazonforum.com/ [L] URL:Mal (0)
2/18/2019 12:59:08 PM	hxxps://amazonforum.com/ [L] URL:Mal (0)
2/18/2019 1:01:56 PM	hxxps://amazonforum.com/ [L] URL:Mal (0)
2/18/2019 1:06:03 PM	hxxps://amazonforum.com/ [L] URL:Mal (0)
*
* Avast Real-time Shield Scan Report
* This file is generated automatically
*
* Started on: Monday, February 18, 2019 1:25:07 PM
*

2/18/2019 2:18:08 PM	hxxps://amazonforum.com/ [L] URL:Mal (0)
2/18/2019 2:18:54 PM	hxxps://amazonforum.com/ [L] URL:Mal (0)