Hello,
I was about to install the extension of the Advanced Uptime Robot until I read that this function is only free for non-commercial use.
Not to be misunderstood, it is not free not because of MainWP, there it is, but on behalf of the service Uptime Robot. Perhaps there is an alternative on the market which can be used by MainWP for free? 
In the meantime I will search another one, 84 bucks in a year is not what I would pay for this function, but perhaps it´s only me.
Hello
Yes I was wondering the same. I will be forced to cancel my account at Uptime robot from 1:st dec.
1 Like