Problem with access to Admin Panel

Hello i have a problem with admin access to my website

I have active this plugin and now i can not access.

I have recived a lot of mail with this content:

This email was sent from your website “LS Consulting” by the Wordfence plugin at Friday 3rd of April 2020 at 11:31:54 AM The Wordfence administrative URL for this site is: https://www.ls-consulting.it/wp-admin/admin.php?page=Wordfence
A user with username “admin” who has administrator access signed in to your WordPress site.
User IP: 5.90.142.79
User hostname: mob-5-90-142-79.net.vodafone.it User location: Rome, Italy

NOTE: You are using the free version of Wordfence. Upgrade today:
– Receive real-time Firewall and Scan engine rule updates for protection as threats emerge
– Real-time IP Blacklist blocks the most malicious IPs from accessing your site
– Country blocking
– IP reputation monitoring
– Schedule scans to run more frequently and at optimal times
– Access to Premium Support
– Discounts for multi-year and multi-license purchases

Click here to upgrade to Wordfence Premium:
https://www.wordfence.com/zz1/wordfence-signup/
—
To change your alert options for Wordfence, visit:
https://www.ls-consulting.it/wp-admin/admin.php?page=Wordfence&subpage=global_options
To see current Wordfence alerts, visit:
https://www.ls-consulting.it/wp-admin/admin.php?page=Wordfence

No longer an administrator for this site? Click here to stop receiving security alerts: https://www.ls-consulting.it/?_wfsf=removeAlertEmail&jwt=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJlbWFpbCI6ImluZm9AbWF1cm9nYWxsb25lLmNvbSIsIl9leHAiOjE1ODY1MTgzMTR9.2cmqu4Gs2iLuhyMrg4Zf7uIKbFyN0N7ndUlHjUlo8gw

How can I solve it?
I also tried to disable all plugins via FTP but I still couldn’t access the administration panel