site not loading at work location

I moderate a non-profit site, njbreastfeeding.org and we host an annual healthcare conference. I recently noticed that sometimes mobile access to site (iPhone/iPad) would occasionally redirect to porn sites (instabang, after cycling through few other links, on iPad and badoink on iPhone). This happened only occasionally and only on mobile devices but I treated it as it the site was hacked. Checked code the best I could, changed all passwords, updated wordpress and all plugins, changed theme (the theme I was using had a funky php code), installed Wordfence, and ran site through some of the free Chrome url checkers. I also checked with Go Daddy the hosting service used. I do not know if I eliminated the problem, one site user reported she was redirected to badoink on phone after changes were made but I have another problem that may or may not be related.

The website can no longer be viewed on campus at the hospital, where nurses and others need to access pdf files and registration for our conference (it opens fine on all the normal browsers and devices I have checked). Only the background image loads on most of the computers checked at work. I did check with IT on campus and the representative was able to open the website and view everything, so that ruled out a firewall. One computer loaded the site after a message box was displayed but when a new page was attempted only the background image displayed.

This is the message that appeared on the worksite computer (it also appeared on an old laptop I used to check browser compatibility with IE):
“In order for this site to work properly, and in order to evaluate and improve the site we need to store small files (called cookies) on your computer.

Over 90% of all websites do this, however, since the 25th of May 2011 we are required by regulation to obtain your consent first. What do you say?”

The wording and message are not mine???

Are these 3 issues related:
1) Occasional redirect to porn sites on mobile viewing only (instabang/badoink)

2) Unable to view website on worksite computers (at two local hospitals)

3) Strange cookie storage message

Managing the website is a volunteer position and I am definitely a “newbie” with web stuff. Can anyone offer any suggestions for any or all of the problems? Any help would be appreciated.

Thank you,

CasiRN