>>558
正確にいつとは分からないが、>>531見ると最近様々な人からAndroidPoliceにレポートがあって気付いたみたい
Googleに何故このような事が起きるか質問してるがまだ回答は得られてないみたい
"We've reached out to Google to see why these credits appear to be expiring for so many all at once and why expiration dates appear to be changing, but no response was forthcoming at the time of writing. "