Twitter users massively report a malfunction of the social network. This is also evidenced by the data of the Downdetector service.

Screech of the results of the Downdetector service.
When you try to enter the site and the application, an error message appears. Downdetector calculated that 59% of those who informed about failure complained about problems with the application of the application, 33% - to the site.
As the social network users noted, at about 15:40, access problems ceased.
On March 4, Roskomnadzor blocked Twitter in Russia.
Updated at 15:46. Added information on the resumption of the social network.