Same for me, knock on wood its been better for a month.
But I get a 7 day black-out at times. There is nothing I can do. My best bet is like that the provider either blocks me out for a week because I failed at some survey, or that the provider see that they have too few offers to give everyone the 2x booster so they randomly blocks out a number of accounts for a week. Its always exactly 7 days for me, and nothing works to get it started again on any device.
Pavel is working on mapping the bonus gain. I think you can really cut it. Make sure that you pick as few players as possible that fit the criteria, then find a mix of drills that it only take 2 practices times like 6-8% condition loss to get full bonuses (I use 1. stretch-piggy-piggy-PGS-UYH-warm-up and 2. stretch-piggy-PGS-PGS-UYH-warm-up, for a con loss of 16.5% total. This is not any kind of optimal selection though. I am really looking forward to Pavels work because I am sure big gains can be made!).
A tip is to pick the free guys from your youth academy that are DM/MC/AM (left, centeral or right), and add positions to them so that they become like DMC-MC-AMC. With 4 guys like that you can get full attacking, possesssion and defending bonus for just 16% con loss for 4 slave players. Then you just need to add a few more guys to use to get the full condition bonus.
At first it hurt me a lot not to get the 2x boooster, but you can work around it. Without the 2x booster I just need to run the above drills 4 times, and if I can use player that won't play in the first game, and mix up the others, I very rarely have to use rests.