The comment tied the geographic limits to land under temporary occupation that Ukraine still claims as its own.
The Ukrainian president said the limits had not been removed and continued to hinder efforts to intercept incoming drones.
He said he had asked officials"to work as closely as possible"with the US government and with Musk's company.
He was referring to drones that follow an Iranian design, which he said the interceptors cannot catch once the link fails.
It appeared to be returning to normal after a week, after which Ukraine said the restrictions were still being implemented.
Ukraine meanwhile said it had carried out strikes on a petrochemical plant and an oil refinery in the central Russian city of Nizhnekamsk.
Scores of people were said to have been hurt in those attacks, as well as two in the Donetsk and Kyiv regions.
Estonian authorities said they had been ordered by Russia's GRU military intelligence service to try to carry out the attack.