Instalex is a beautiful concept, I'll be honest. I shall not detail its working or comment on its user interface because that information can be found anywhere. What I DO intend on telling you here is whether or not is this site a scam.
The answer is not a simple Yes or No, however. The truth is, the developers are TRYING their best to genuinely provide customers with what they promise. Unfortunately, they are up against a giant, giant multinational corp., Instagram, while they themselves are a small group of less than a handful of lads from Russia. The result? Most of Instalex's features (including the most important one, Auto-Like) do not work for days and days if Instagram as much as makes a TINY change in its security (which it very frequently does), before the Instalex team finds a way around it.
Verdict: Instalex is still growing. Finding ways around Instagram's security. My opinion is: Give them time. Come back after a few months. And THEN maybe give them your money.

Do not waste your time with this. I have sent a number of emails asking for assistance and have had no reply. Terrible customer service. My business instagram account has not improved in the slightest. Instalex did NOTHING.

To promote the Internet business (selling watches and wallets), it was necessary to create a page in the instagram to attract people. But my page was not popular (((Thanks to this service, I collected the necessary number of REAL people !! Now my page is signed daily For 10-20 people, which significantly increased sales

I've always wanted that on my page there were a lot of subscribers. The guys from this service are truly revived my page. The audience is growing and likes too) Thank you!

Great service for promotion, I am very pleased. Account now live, the audience grows itself. Now I have motivation to seriously work on my account. I wish to service big profits)