That means picking up the phone and talking to them.

You can listen to Shawn Terry's podcast to get the idea of how to do things and Michael Quarles podcast have live phone calls you can listen to that are very helpful.  

Is there a recommended option for washer/dryer that doesn't require coins/bills but instead takes phone pay or a card, so that both tenants and prop managers don't have to deal with coins and bills?

Thanks @Carlos PtriawanLooks like the link does not display correctly; but I did not get a message from admin, so here it is again for reference.However, you can always look it up on YouTube/@MarcusMKE and this one is called: Where are Milwaukee Home Prices going?

It includes everything you'd need to start texting (phone lines, unlimited texting, unlimited calling, unlimited users, follow ups etc) without paying for each part on a subscription. 

They are not cheap and obviously require some kind of cellular plan, but I was able to get them to work using Mint mobile (you need a phone to activate the sim card on first, like an old iphone) Ive had 3 of these up watching a property in Cleveland, OH for well over a year, and Ive only had one issue where I needed to go check on the camera itself, (the plug for the solar panel came disconnected and just needed plugged back in) This camera in particular is nice because its actually 2 lenses that capture the full 180 degrees, so one cellular plan for "2" cameras.

I asked preferred vendor but lady on phone said you can use anyone available.

A phone call to the city would help clarify this for you.

But i am now unable to access them from my phone which was the point of getting them in the first place

Customer service revolves a lot around maintenance, answering the phone or texts promptly, and resolving issues in a timely manner.