Twitter on iPhone with Megaphone-Moscow?

On an iPhone with a Moscow megaphone, Twitter does not work via GPRS. Neither through the web nor with the help of customers, people often complain . According to rumors, sometimes it turns out to send a message or update the tape, but then everything falls off.
They say that hysteria began since the end of summer (this is confirmed by the date of the first messages in the Megafon forum thread).
Interestingly, through GRPS of other opsocks, twitter works fine, as well as on other phones via megafonovsky Internet.
The MegaFon forum is discussing the problem, but the employees are clearly reluctant to react, trying to blame everything first on Apple, then on the prevalence of the problem among other global operators, doing nothing themselves and waiting for the support of "advanced users."
Guys, you need to take active steps.