if you just have less than 10 miners in home 99%uptime is easy to realize ,but if you host 50 unit miners in home, it is a totally different story
Apparently we don't host 50 miners in our home since everyone knows it is not possible to support them and you need professional data center for this.
If I were you, I wouldn't start selling if I didn't have my data center up and running 100% without problems.
Now people are loosing faith in your service. If you compare services from other members in this forum you will see that they have almost 0 downtime.
So maybe you have to stop sales to sort out the issues you have and resume when you have good service level. Having standard and professional hosting is unacceptable. Hosting should be 99% up - not count hours every day of downtime.
Maybe the hardware you are hosting is not capable of 99% uptime?
Then maybe sell that hardware only for people to have it at their home and offer hosting only for the ones that can be 99% up.