I went to the web shop, and clicked redeem.
Then I clicked "Redeem" again with another window popping up.
Then 3 options allowed me to select my items.
The only tier I can go to is 1st Tier?
Or Do I get everything in Tier 1 2 and 3.
You get everything. Teir 1 has 3 options for your selection
1 TMP (perm) + 30% Euro bonus
2 SOCOM (perm) + 30% Euro bonus
3 Python (7day) + 30% Euro bonus.