I'm taking a screenshot of everything. Frontier can't be trusted and the website is clearly not working properly. Have screenshot for wife's account with a 500 mile (positive) adjustment that posted on August 21. No new activity since then. On October 4 expiration date was listed as 2/21/16. In early December, the account showed expiration date of 6/4/16. Today expiration date shows as "6 months from last positive accrual" which is absolutely useless since the search history function doesn't work.

Suggest using your miles or transferring them elsewhere...and then steering clear of giving Frontier any business in the future.