WhatsApp’s acquisition by Facebook didn’t bring much of luck to the messaging app. Saturday evening, the messaging service underwent downtime for nearly 4 hours (about 240 minutes) and millions of users couldn’t exchange their messages and communicate with each other.

During absence, users invaded and started protesting on the social networks, even assuming plots and hacking activities. Not surprisingly, the hashtag #whatsappdown was trending yesterday evening on Twitter. Among those annoyed users, many of them shared their thoughts how they don’t like the purchase of the platform by Facebook.

Then an official announcement had come on Twitter: “Sorry we [are] currently experiencing server issues. We hope to be back up and recovered shorty.”

The service restored successfully and started again around 10.30pm GMT, when another official statement was made: “WhatsApp service has been restored. We are so sorry for the downtime…”

Certainly, it was not the first time when WhatsApp went offline, although longer than usual. In the meantime, the rival messaging service Telegram was getting 100 reiterations per second as users were being restless to get an alternative.

Due to the flood of users, Telegram also had server issues in Europe, but then being No. 1 most downloaded iPhone app in 48 countries, the app added about 4.95 million new users to its database.