What settings, what region, what program, what board (etc., etc., etc.)?
We don’t have crystal balls on the forum so you will have to provide detailed information relevant for your case. Don’t make other users have to ask and guess for information that you need to provide yourself.
What gateway, what (region) settings (etc.)?
What have you tried exactly?
Read the LMIC documentation for how to enable debugging.
Tip: It may be helpful to use the LMIC-node example (if it supports your board).
LMIC-node provides more information than the basic examples that are included with the LMIC library.
Please do not post images of code, logs or text.
See: How do I format my forum post? [HowTo]