Jarvee Follow Back Calculator

Ive been using this calculator for over a year and yes I will use some sources on multiple accounts.

But recently I changed to bigger sources and spread over more accounts. I noticed that the FBR was the same on all those accounts and it changes randomly.

I know for a fact one source gave me followers yesterday and it said it was 12%. I woke up today and it was now 0% and only 5 followed from this source.

I spoke to support and the only way to fix this was to take away the scraper tag on sync accounts settings. Which gives a warning that it may cause captcha.

So, my question is. Has it always been this way or is it a new thing? Also have you unticked sync with scrapers and did you get issues?