Just cancel now. You still get the rest of the current month you paid for and there's no need to worry about forgetting. I just cancelled mine. "Rough around the edges" is a nice way of describing an app that doesn't play what I click on but random shit it feels like.
You don't think announcing this rate hike on the morning of the last day of the Q2 is coincidence? Sounds like most people's accounts are scheduled to renew in August, which would be much more impactful if we all waited until then to cancel. The knee-jerk cancelations today are fully expected and accounted for.
I paused today. My sub will continue until my next bill date (13 days) then it ends until November. YTTV will save all of my existing settings and recorded events should I decide to come back. This gives me plenty of time to evaluate alternatives or for YTTV to rethink this price hike.