Is Track. io trustworthy?

Hi,
So I downloaded this app to send an email to someone important and I wanted to know if she actually read the email so following the advices of my friends I downloaded Track. io
I sent myself an email to check like they instructed and it worked. So I prepared the email for the company with two mail address because she checks both when this person has the time. Because I am dumb I checked that everything was in order after sending it and of course I received the notification that it has been read. Amazing.
Approximately one hour later it has been said that my email has been forwarded by a new IP address then nothing. Two days later it has been forwarded again by another IP address. We can see from where it has been possibly forwarded and it's the same location. I am confused by now so I send myself to other email address that belongs to me for different purposes with approximately the same text and attached pieces to it. Before I read it it sent me that it has been forwarded. After I read it and I received the notification that it has been read by one of the email address, I forwarded it and received the notification that it has been forwarded. And received the notification that I read it on my other email address.
At this point I don't know what to believe or not. I don't want to send this person a follow up if she or her team hasn't read and because I am a psycho with this application I tried and quite efficiently failed to my opinion. Is it possible that they forwarded twice without reading it? Or the app isn't trustworthy and sent me this notification to keep me hooked so that I would subscribe and everything? I'm lost and it was really stupid of me doing this I am perfectly aware of this.
Can you please help me to see where is the problem?
Is Track. io trustworthy?
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