fix_Getting_app_write_error_#449_part_3

Fix isExpired() calling parameters

fix_Getting_app_write_error_#449_part_4

Revert isExpired() parameter to validSeconds (from validMiliSeconds)

fix_Getting_app_write_error_#449 part 2

fix_Getting_app_write_error_#449_part2

Fix codacy recommendation

fix_Getting_app_write_error_#449

Change heatBeat default to 60 seconds