I sent out my docusign and the seller didn't sign because of sections protecting me like condition of property and mediation.

If needed, consider mediation to solve the issue.

FSBO's almost always think their property is worth more than it is, are difficult to schedule showings with, haven't prepared the property to sell, are unwilling to negotiate, and they almost never know the sales process or have the software or the contracts to make the transaction go smoothly and keep the deal from falling apart over little things (very common when there are no agents to act as mediators, buyers and sellers have inherently opposing interests and tend to argue then cancel the deal).

Some will be sight unseen, some will be third party mediated and those "auctions" always have ghost bidders to get to the reserve so you will see a property come back again and again.What was your goal in going on here?

If you serve them notice of non-payment, they can always cure and that would end the eviction.No matter which way you proceed, you need to start ASAP as it will take some time to get a mediation date and then an actual court date

On top of all that, I wouldn't want to sit around rewinding video to try and Perry Mason who the Hamburglar was, and then have to mediate petty disputes between strangers from afar. 

Explore Mediation or Settlement: In some cases, it may be possible to resolve disputes with tenants through mediation or negotiation.

Is mediation required?

There is always a 3rd party mediator.

Finally, we served the 3-day pay or quit on July 8, 2019, went to mediation Aug 20, 2019, trial Aug 22, 2019.