The administration said last week that Americans would be able to order up to four tests per residential address through the website and see tests ship within 7 to 12 days of ordering via the U.S.

The Biden administration’s website to order free rapid Covid-19 tests is up, and some users trying to get the tests delivered to apartments and other multi-unit residences ran into problems.

The website, COVIDtests.gov, went live a day earlier than anticipated in a “beta test” on Tuesday, sending millions of users to sign up for the tests from an order form ahead of a Wednesday morning launch.

A White House official said this was “standard practice to address troubleshooting” to make Wednesday’s launch “as smooth … as possible.”.

Some residents in multi-unit dwellings tried to register to have tests delivered but received error messages saying tests already had been ordered for their address.

An administration official said the problem was not widespread and that orders are being prioritized for people in areas facing disproportionate Covid-19 cases and deaths — the first 20 percent of test orders processed will be for people in vulnerable ZIP codes.

“This will help ensure those most in need of the tests are receiving them as quickly as possible,” said the official, who was granted anonymity to speak freely about the site.

The administration said last week that Americans would be able to order up to four tests per residential address through the website and see tests ship within 7 to 12 days of ordering via the U.S.

Government websites haven’t always worked as planned, from the failed HealthCare.gov, which crashed on the first day of open enrollment under the Obama administration, to a national Covid-19 testing website former President Donald Trump announced that didn’t come to fruition