If you need a clue ask the group to send you a letter to your private reply.
4 minutes good
3 minutes excellent
2 minutes exceptional
90 seconds superior
XHI ZU KBF IZXKFG HW HAG MZUTHXKFXK
DPMF RNHGZHAU UADDFG YQ KBZU UAX HW QHGV- IZNNZPD UBPVFUJFPGF
Solution to previous puzzle (select the yellow text with your cursor to read):
NOW IS THE WINTER OF OUR DISCONTENT
MADE GLORIOUS SUMMER BY THIS SUN OF YORK- WILLIAM SHAKESPEARE
HAL'S CRYPTOGRAM HELPER