http protocol in stead of https – Acitivity e-mail

Hi there,

I installed the Wordfence plugin on several websites.

Reading more carefully the Wordfence activity e-mails where it’s written:”This email was sent from your website https://domain.com […]” I noticed that for some websites the URL is correct and it follows the https protocol (https://domain.com), while for a few websites the URL shows the http protocol (https://domain.com).
This second case is uncorrect infact all my websites follow the https protocol.
I would like to know:
1) how can I correct the url for the http protocol making them with the https protocol for every website
2) if the setting with of url with the http protocol may cause any compatibility problem with the plugin.

Looking forward to hearing from you soon!