Based on my knowledge some may have contributed to the I/O though:
- Aryo Activity Log
- WP-Ban❌
- Ultimate Member❌
- WooCommerce
- (A custom plugin I copy-pasted from somewhere to stop admin emails from being sent when any member changes their password)
- WPForms
- WP Mail SMTP
- The Events Calendar
- Roles & Capabilities
- Loginizer❌
- Advanced noCaptcha & invisible Captcha (v2 & v3)
For form’s, you can use google forms and embed that.