Huge follower drop - explanation?

hi!
i´m currently looking into buying 100k instagram accounts, so i´ve been checking quite a few accounts the last few days using hypeauditor. now i came across one account where i just don´t understand the analytics.
account currently has 161k followers, about 50% of good quality. but the follower growth shows that the followers dropped from 160k to 5k twice in july and jumped right back up to 160k the next day. first drop was for 1 day, second drop for 2 days. sellers explanation is that he didn´t post on these days, which doesn´t make any sense.
does anyone have an idea or explanation what was going on there? or could this just be a mistake from hypeauditor?

Probably the seller bought a bunch of fake followers just to sell the account.

Fake followers mate

What is the overall score?

SocialNV said:

sellers explanation is that he didn´t post on these days

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Best explanation ever
Why do you still focus on that acc?
Change and research another acc, don’t waste ur time

misterbarth said:

Best explanation ever
Why do you still focus on that acc?
Change and research another acc, don’t waste ur time

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yep, really like that explanation too as it makes so much sense
after seeing that I didn´t wanna buy anymore anyways, but would still be interested to know what happened there. might be useful to know for the future.

been meaning to start my own thread for this.. so I have a magazine I started and have a page for... I've bought fake followers on a personal account and realized the damage they cause. So I've never got them on this new page, yet ill have days where I lose 800 to 1000 followers in a very short amount of time. I've been hovering around 30k followers for the past few months, ill get to 30.8 and ill loose 1000 followers. It's super annoying, I've been using Jarvee recently and tried the block followers who hadn't liked last 12 posts but I only took off a few hundred.. Is it possible Instagram was slow to reflect the number? anyone else had this issue?