Has anyone experienced this?

Hello guys,
I have an instagram account that I've been growing manually for some time now… however now when I press the follow button it works for around 10 people. The people I follow after appeared to be followed ("it says following"), however the number of people I follow on my profile stays the same.

If this has ever happened to anyone I would very much appreciate their help. Is this a bug or is something wrong with my account?