Lines of nonsense code where wordpress pages should be: Avada - wordpress

A few of the pages on my organisation's website are displaying code - not real code - just nonsense code, like this:
���ْG�(�,��?���fUH쵲اDQj�������he $�#B�.
Go to http://www.eavi.eu/about-us/ for an example or check the image here:
I have emailed Avada's support, but I was wondering if anyone has encountered anything similar in the past and might be able to help.

I removed the Tiny MCE editor plugin and this fixed everything.
It seems there is an issue with the Avada theme and this plugin which I confirmed with someone else.

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Attached is a screen shot of what happens when you add/cancel friends??
Help
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Strange text under my WordPress Blog

I have been trying to get rid of some strange text appearing under my WordPress blog, I have check Wordpress support and googled about it but nothing. I tried changing the Theme of the blog too, but to no avail. The Address to my blog is abuango.net. I will be glad if you can guide me to solving this issue...
I am using the Foghorn Theme, below is a preview of the strange text:
You have been hacked. Read Verifying that I have fully removed a WordPress hack? for advice.
The most important part is: You have to find the infection point. If you don't know this … it will happen again and again.
I seem to have fixed it using WordDefence (http://www.wordfence.com), my General Template was modified, the plugin showed a side by side comparison of the original and the modified file and gave an option to restore original. i will now proceed to changing all my passwords. Thanks all

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