Zelensky said Starshield restrictions have disrupted Ukrainian military operations across the front line, limiting interceptor speeds and hampering efforts to counter Russian attacks.
All-clear messages were sent shortly afterward for each alert, and Ukraine's Ministry for Digital Transformation said the app had been temporarily suspended.
The local ceasefire in Oleshky was reached thanks to mediation efforts by US First Lady Melania Trump with the pope's involvement.
Ukrainian President Volodymyr Zelensky said earlier this week that Ukraine had been waiting for almost a month for the US to sign off on critical missile supplies.
The ceasefire will enable aid deliveries and allow evacuations from a frontline town suffering acute shortages of food and medicine.
Ukrainian President Volodymyr Zelensky has repeatedly called on the US, which supplies missiles purchased by NATO allies under a program known as PURL, to speed up deliveries ahead of winter.
"At its core, (the war) is about 11% of one part of that country that Russia wants and cannot take militarily and that Ukraine is unwilling to give up," Rubio said.
Zelensky said on Friday that peace negotiators from Ukraine, Russia, and the US had agreed to meet at a technical level in the first half of November in Abu Dhabi.
"Ukraine military violated Starlink terms of service and used it for offensive drone strikes to kill people. That loophole was closed last week," Musk said on X.
Melania Trump has secured a ceasefire between Russia and Ukraine in the city of Oleshky, which will begin on October 29, the White House said on Friday.
Russia pounded Kyiv with ballistic missiles, and Ukraine sent hundreds of drones towards Moscow on Thursday, as the warring sides kept up a barrage of attacks despite the latest US push to end war.
