Their site is free, and the paid version gives access to a ton of data.

DealCheckDealCheck offers a free version that simplifies deal analysis, helping you evaluate potential investments quickly.

Both of those are simplified versions of the process for the sake of conversation.

I started with Guesty for Host (non-pro version) and transitioned to Hostaway and now we are with Hostaway for over a year and half and no complaints.

Here’s a refined version of your message that maintains your original questions and concerns while improving clarity and flow:Hello,Since January, I haven't received the full rental payment from the property management company.

A regular camera will monitor more of an area, but it is nice to have the doorbell version so if the house is empty and someone rings the doorbell, you are notified and can talk to them through it. 

To equal 50,000 a year plus you would need 9 of these house for 450,000 cash investment.As someone who owns nearly that many houses altogether in C-D neighborhoods here is how you do it without 450K investment using my own version of BRRR. 1st house purchased with my mother in 2011.

Of course you get the basics but if you want to full version of the tool it $50.00 bucks per mo. extra and you need to buy credits for things like skip tracing.To be honest I've learned so much more right here through Bigger Pockets, and I believe  you can find a mentor on here or someone that would be willing to help you out right here.

To this day, Jorge Newbery and AHP Servicing, LLC have not deposited any funds into the Court’s registry"Only providing the above information based on what was last available in public record and not providing an opinion on whether the above statement is true or false - just providing an excerpt from this link: WAWD CM/ECF Version 1.7.0.2 (uscourts.gov)

When I acquired my own portfolio I did so largely by my own version of BRRR which involved paying cash for a property, fixing it up, renting it out and then a year later getting a Wells Fargo HELOC on them and using that money to buy another house.