Hi and welcome.
This is normal. The community server only generates slices with valid guide data for 3-4 days in advance. The two week reference is for the "no nag" channel which always has two weeks of dummy data so the TiVo does not complain about itself running short of guide data.
While TiVo here is VERY similar to your experience in the USA it is not 100% the same as you will find out in time. However for a totally free community based organisation we are not doing too bad either
Cheers
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