Red Beauty Textiles review for Omnisend Email Marketing & SMS

The issue is changing the customer account data with no way to track the changes. This is basic. Zero stars! I added this app to test it to see if it would work for my shop. Uninstalled without incident. While I'm looking thru my customers, I see a little note "Omnisend added phone number XXXXX to this customer yesterday" There's no tag, no note, no message from Omnisend app that they're altering my customer's data. Why?