If you’re trying to snag one of those elusive COVID-vaccine appointments, which website are you supposed to use to sign up?

It depends on where you live.

Florida health officials rolled out a new statewide preregistration portal last week designed to let Floridians sign up once and then receive notification when there’s an opening in their area. But Seminole, Volusia and Orange counties aren’t using it, and Volusia reported not even being able to access the state’s information.

“We know that people are really frustrated, and understandably so,” said Kate Sark, a Volusia County spokeswoman. “It’s hard to get a vaccine to begin with, and now we’re saying that this new website is rolling out, but you’re getting all of these counties [saying], ‘We’re not using this yet.’ But we can’t even access it yet. When people register there, we’re not able to see that.”

The site — myvaccine.fl.gov — launched last week and promised “currently eligible Florida residents to save their place in line by preregistering today.” But counties apparently had to opt in to use the system, and Sark said many haven’t done so yet because they lack either the information or equipment to make it work.

In Seminole, officials issued a statement on Saturday that they were still reviewing the statewide COVID-19 vaccination registration system, but that, for now, they were taking a pass.

“As feedback from other counties has been mixed, Seminole County has elected to not add additional stress to our residents by going with a system that still has bugs,” the statement read. “Please DO NOT use the preregistration portal and expect to be contacted when appointments are available. The State of Florida has not provided this data to the counties and Seminole County has no way to retrieve it.”

On Monday, Orange County officials said they faced the same obstacles. Orange is still using a vaccine registration system designed by CDR Maguire, as contracted, for at least another month.

But Osceola County expects to exclusively use the statewide site starting Wednesday. And Jeremy Lanier, public information officer at the Florida Department of Health in Osceola, said the new system should lead to less hand-wringing by both residents and health officials.

“We had a lot of seniors who were calling multiple counties, trying to get an appointment, and they just ended up frustrated,” Lanier said. “Or a portal would open for appointments and then close a few hours later because there were no appointments left. With the statewide system, once they preregister, they’re in line, and they’re [scheduled for a vaccination] in the order in which they came in.”

The site asks you to select a single county where you want to be vaccinated and will delete repeated requests by the same person for other counties — which, Lanier said, will keep limited vaccine supply from being wasted when someone gets multiple appointments in different counties and never cancels any of them.

The state’s program also has a phone number for each county so that people who lack internet access can sign up.

“I think, absolutely, it will make things a lot easier,” Lanier said.

In Lake, spokeswoman Noelda Lopez agreed.

“This website will allow individuals who are eligible to receive the COVID-19 vaccine to be proactively contacted when vaccine appointments are available at state-supported vaccination sites,” she said. “Their place in line will be reserved.”

Sark said Volusia officials expect to embrace the statewide system at some point, though doing so requires the county to buy some additional computer equipment.

“We have heard from some of the counties that rolled this out that there were, understandably, some kinks and challenges to work through,” she said. “We just want to ensure that when we roll over to this new system, it’s a very smooth transition. We want to reduce the stress and anxiety because people are already feeling enough of that.”

ksantich@orlandosentinel.com