Hi, thank you for contacting JustAnswer.com. My name is Russell. I will do my best to provide the right answer to your question.
'Forget about S4' is an option available, I think - not an error message.
So don't accept that offered option. It will undo the setup and exit the connection too like as not, and that from your account is what happens.
When you're connected, accept that as done, and proceed to use the connection.
(Unless that 'Forget about S4' message is actually a notification and not an option. In which case, it should be 'forgot about' not 'forget about' - past tense would be a notification and future tense an option to choose or reject.)
As for the second question: That probably means that your GPS needs updating, or need updated maps that include the course. I don't know how old your maps are, or how long ago they were loaded, nor for what region of the world, so tell me more about that, and I can advise you more specifically - as to whether you need to update maps, or select the right map file on your device that is already there, or do something else.
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