https://premium.wpmudev.org/forums/topic/error-on-subscribe-plugin-fatal-error-call-to-undefined-met

OK, I clicked the link in my email to https://premium.wpmudev.org/forums/topic/error-on-subscribe-plugin-fatal-error-call-to-undefined-method-incsub_subscribe_by_email_modeldel#post-807086

However, there does not appear to be a place to reply so I'm using this new ticket.

I do not see version 2.9.3 as available.