I need help with the Wordpress contact page

General information for the website: Services webpage
Kind of development: Customization of existing website
Num. of web pages/modules: 1
Description of requirements/features: Hi

I have two related problems with our website now:
I have suffered a spoofing attack recently, which may be the cause of seeing the traffic to the website go down dramatically in the last days (I hope that Google didn't penalize me).
In addition the contact form has some mistakes to be solved and this may have been related to the former attack.
I would appreciate if you could review the security of the website, as this may have been the cause of the problem.
In addition, we have moved and changed the adddress, but in the map in this page, we aren't able to change it as well:
Extra services needed: Optimization, Security
Extra notes: