The cleanup programme that you need is at ~
Click the link then click "Run", wait a bit and click "Run" again, then"Yes" when it asks about Malwarebytes.
Click o.k. for English, then "Next". Click the little circle for "I accept", then keep hitting "Next" on each screen that comes up, 5, in all. The 6th one, click "Install". At the 7thone, click on "Finish".
The programme downloads some more stuff and when that completes, click O.K.
Finally,click the little circle for'perform quick scan' and then click the pale blue scan button.
Go and have a cuppa while it does its stuff (about 20 minutes).
On your return,click "show results" and then " remove selected"
This will clear up most nasties and you should be able to access the site.