The self-isolation countdown on your NHS COVID-19 app may differ from what you've been told by NHS Wales, Test, Trace, Protect. This is not necessarily an error. For example, the app may have identified a different contact to the one that contact tracers are discussing with you. Contacts identified via the app are anonymous, so it is not possible to confirm if it is the same contact or not.
In Wales, if you have been contacted by NHS Wales Test, Trace, Protect via SMS text message, email or telephone and told to self-isolate, or have received notification of a positive test result, it is a legal requirement that you do so. If the app advises you to self-isolate for a shorter period of time than the period advised to you by contact tracers, you must self-isolate for the time advised by contact tracers in order to comply with the law. Read more about the latest guidance in Wales. If the app tells you to self-isolate for longer than the period advised to you by contact tracers, then the additional time period identified by the app is only advisory. This means you are not legally required to self-isolate for the extra time that the app is suggesting, but it is a recommended precaution.
In England, there is no longer a legal requirement for people with COVID-19 to self-isolate, however if you have any of the main symptoms of COVID-19 or a positive test result, the public health advice is to stay at home and avoid contact with other people. Read more about the latest guidance in England.