Avast blocking web site

I have had Avast free version for years with no problems, but the latest version blocks my Facebook backgammon site. Apparently, the new Avast problem is quite widespread and people suggest different solutions. None of them worked for me, so presently I am using an older version of Avast with no problems.
Is there a more sophisticated solution?

What is the exact link to the site?
Please make it not clickable.

Change http to hxxp

If you believe it is a false positive, you can report it here:
http://www.avast.com/nl-nl/contact-form.php

hxxps://apps.facebook.com/playgembackgammon/?code=AQAA4PmoqXozAqhm6ygQxCiTUlF2PrGkWvKZGgsKEeE9FZCxA2u2a22AcnLX1ZY7u3X2iNI3sP7O0XYYMF0wy1u6I1eVN2mVXKFtIwdRUr1d9M57eqrGyciMg7a-wmU0CM9r5nR0XYaon4xTo5oj9FDM6IjVZlGEBOfGiBcfPcAgUP_l4HbunWX1gYhpqKjievAa6gZnb2LHIsNWGk2AUXum

Non-clickable is change https with htxps!
For general insecurities see here: https://asafaweb.com/Scan?Url=https%3A%2F%2Fapps.facebook.com
Cannot establish anything via: http://app.webinspector.com/public/reports/19414541
There are various problems with xss and x-content, cache-control and cookie security option settings!
Site check here seems OK: http://www.networking4all.com/nl/helpdesk/tools/site+check/report/?fqdn=https%3A%2F%2Fapps.facebook.com%2Fplaygembackgammon%2F%3F&protocol=https

Maybe you need a qualified removal expert here to establish if you haven’t been in contact with malcode!
The generic malcode launched from IP seems to have been closed: http://support.clean-mx.de/clean-mx/viruses.php?sort=firstseen%20desc&review=69.171.237.20
http://support.clean-mx.de/clean-mx/view_virusescontent.php?url=http%3A%2F%2F69.171.237.20

polonus

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What a terrific advice! Avast changes to a new version and my problem (and others’ also) starts and I need an expert. Thanx a bunch.

Have you un-ticked block social sites in the settings of Avast Online Security ( Browser Plugin ) ?

It is part of the social networking in AOS

Disable the addon in IE, FF

Love it. No plugin, no problem.
Thanx, Essexboy.

And craigb, thanx also.