I did have a problem for over a week. Couldn't SYNC or get my ACER Tablet to connect with GARMIN CONNECT MOBILE (It did work fine with the WINDOWS version on my laptop). See the ACER thread I posted about 6 -8 THREADS back. I UNINSTALLED GC and RE INSTALLED a few times but nothing worked and I couldn't get the reinstalled Tablet version to SIGN IN to get the Application to work. After many tries, I left it alone for about a week, then UN and RE INSTALLED one more time, then FINALLY, I was able to SIGN IN and SYNC my VIVOFIT and see all my prior 4 months of STEPS information.