owner cancelled two week long gig, how do you handle cancellations?

Refunds depend on your stated policy and when they cancel.

It is all explained here:

https://support.rover.com/hc/en-us/arti…

The definitions are immediately visible to anybody looking at your profile, when they hover over the word Moderate. There's a pop-up explaining exactly what it means.

I took a look at your calendar. If this is for the block of time shown as unavailable in April, then they've certainly met the time requirement even if you had a strict cancellation policy.

Does Rover have a standard fee withheld if an owner cancels a booking? Only what is documented in the link Karen provided, sorry but even if you set your policy to strict you won't be compensated if they cancel with this much notice. This is a fairly happening occurrence as clients change plans frequently. Best of luck going forward.