The Facebook company -including Instagram, Messenger, and WhatsApp- is facing a surprise decision from Kevin Systrom and Mike Krieger, the co-founders of the photo-sharing app Instagram, which is expected to affect the value and the Stability of the company.

Yesterday, Mr. Systrom, Instagram’s chief executive, and Mr. Krieger, the chief technical officer, have announced their Resignation and their plan to leave parent-company Facebook within the coming weeks, as confirmed by The New York Times report, late yesterday.

Shortly after that, Instagram confirmed the Resignation of Kevin Systrom and Mike Krieger in an official post blog, as a Statement from Kevin Systrom, Instagram Co-Founder and CEO, which came as such:

“Mike and I are grateful for the last eight years at Instagram and six years with the Facebook team. We’ve grown from 13 people to over a thousand with offices around the world, all while building products used and loved by a community of over one billion. We’re now ready for our next chapter.”

“We’re planning on leaving Instagram to explore our curiosity and creativity again. Building new things requires that we step back, understand what inspires us and match that with what the world needs; that’s what we plan to do.”

“We remain excited for the future of Instagram and Facebook in the coming years as we transition from leaders to two users in a billion. We look forward to watching what these innovative and extraordinary companies do next.”

The New York Times report also added that Instagram’s Co-Founders notified Instagram’s leadership team and Facebook on Monday of their plan to resign, as reported by people with direct knowledge of the matter. Additionally, those people point out that Mr. Systrom and Mr. Krieger did not give a clear reason for leaving Instagram and the Facebook company and till now no one knows the real reasons for their resignation.

But, according to the Bloomberg report, this decision was the result of disagreements between the Instagram’s Co-Founders and the Facebook founder, Mark Zuckerberg after they refused to build look-alike functionality until Zuckerberg personally requested it.

Back in 2010, Mr. Systrom -who was 34 years old- and Mr. Krieger, 32, met each other, then they transformed a software project built by Mr. Systrom into what is known today as Instagram, that now has more than one billion users.

In 2012, Facebook Inc. announced that they bought the photo-sharing app Instagram, which was a 13-person company for $715 million. Finally, we can say that this surprise decision is expected to affect the number of Instagram users worldwide, as ads will rise on the Instagram platform similar to the Facebook platform. But up till now, we can not be certain what the impact will be.