trainer stoped providing data back..

[alibi]

last used about month ago without issues.
yesterday after start of training session discovered that trainer not provide any info (power, speed, cadence) back to apps
(etraining, xert. sometimes apps says "no incoming data")
or device (garmin fenix).
with either ant+ or bt connection.
however when i change level (in level mode in mobile e-training) - resistance also changes.
any suggestion?

[alibi]

also noticed that it stopped wake up after auto power off by nonuse..
so, i suppose it's problem with board?

ps: looked through forum. there are some posts with similar problem -_-