hi,
there are two types of licenses - annual subscription edition and perpetual edition.
from your description you use annual subscription license. annual subscription license is valid for only one year(365 days)
after that you need to purchase new license.
perpetual license is valid for ever.
for more information, see
http://cache.nxp.com/files/soft_dev_tools/doc/fact_sheet/CODEWARRIORFS.pdf?fpsp=1&WT_TYPE=Fact Sheets&WT_VENDOR=FREESCALE&WT_FILE_FORMAT=pdf&WT_ASSET=Documentation&fileExt=.pdf
can this help you?
Have a great day,
Jennie Zhang
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