If you have federal student loans, log in to your servicer account today. Don’t wait for a letter, because a lot of people never got one.The SAVE (Saving on a Valuable Education) repayment plan is gone. Some borrowers have until Tuesday, Sept. 29, to choose a new plan, although Yahoo Finance reports that, “September 29 is not a nationwide deadline: Borrowers are being contacted in waves and have 90 days from the date of their individual servicer…