Hello @verosoler
Sorry for the experience, if you have faced any issues please contact us on support forums by creating a new support topic.
If you can’t access your site, we recommend removing the AMP plugin using FTP or File Browser tools from Cpanel.
Goto wp-content/plugins/ remove amp directory.
We always recommend trying the AMP plugins on a local or development environment in case there are many plugins (you have a big site) or you are not using the AMP-compatible theme.
Also, we will recommend reading our getting started guide to learn about AMP plugin.