growing problem

Hey!

I'm helping some Instagram page to growing.
One of them active from 2017 februar and I beginned 350-450 daily following, but after some days I had to stopped for a few days, because the program can't followed new pages. I reduced the intensity and start again, but I had to stopped again... after that I not use like, but it happened again... and again...
What could be the problem?
I use the automata picture uploading 5/week on this page. Is it matter?

On one other page I did fast growing with 600-900 following/day. I did 3000+ new followers about 17 days. After that... something is not good... I had to stopped the program some days because the program can't followed new pages. Ever since something is wrong. I can grow the page some days, and after I have to stop that some days... again and again...

What can be the problem?
What can I do?
The manual activity is low on these pages.

Have you tried doing it manually for a bit see what happens. If it goes up manually then obviously they know its a bot and not counting it from your program.

Yes.
There was some day when I can't following new users for dew days. After that I can... and start the program again... but afters few days it was wrong again...

Other Instagram pages I did same, but the program working well on that pages.