Using messengers is safe until you provide personal information. We don't ask for personal information about you. We ask for some information about your business to build a roadmap, but it doesn't include the company name and other legal details.
We can't give you helpful results for your business without getting any information about it, eg. about your target audience, customer acquisition cost, sales amounts, and prices. You can provide approximate and averaged values.
Also, it's impossible to make some damage to your device through messenger while you don't install anything by yourself. Please, don't install anything you don't know! Our product won't ask you to install something.