Arbusers

At 9/23, I bet Spain La Liga
Rayo Vallecano/Real Madrid (U 3.5) for Game @ Pinnacle $369.66
Rayo Vallecano v Real Madrid - Over 3.5 Goals @ PaddyPower $300
Result
Pinnacle:The event was postponed,Canelled
PaddyPower:Loss

I'm sad, It's a very big loss. All my previous month gain lost.
The first time I found there's different rule about pospone.
Pinnacle cancel the pospone games.
PaddyPower settle the pospone game.
How to prevent this kind of mistake?

If somebody knows there are any other booker will cancel pospone game,
please reply here.
It may help much.

Bookies have different rules about postponed games and you can't know everything in advance. However, what you can do when a game is postponed is to check the rules of the respected bookies and if there is a discrepancy to take the appropriate action. Speaking to the live support can be helpful in these cases.

As soon as you realized that the game would take place the next day and therefore Paddy wouldn't cancel the bet you should had bet on the U3.5 again.

Hohooh don't worry. A day will come when you will earn because of different rules. Sometimes it goes against you and sometimes in your favor.

When you get a message that some bookie has voided a bet, just go to the other bookie, check the rules and if possible cover it somewhere. If you still have time, if not you only can complaint, but chances to get money back are very low.

You should had bet U 3.5 as soon as you realized that Pinnacle had canceled your bet.

Thanks for your suggestions.
Actually I realized the postpone 2 day after the game....lol

The real problem is it's hard to monitor hundreds of arbs.
I bet 7xx arbs in the first month.
It takes a lot of time to take care these record.
The second month I record just the money change in each bookies.

Even I try hard to monitor the arbs, I can now record when I set the bet and the result.
I still have no system to monitor each game's detail situation.
If any tips, Please, thanks.

Monitoring your arbs is a part of your work.

In general I don't keep a record of every bet I place but I do keep track of the most important ones.

At the end of the day(or the next morning) I compare the sum of all balances, including that of MB and any transfers with the sum of the day before. Since my bets are usually only intra-day the sum at the the end of the day should only be a little higher than that of the day before. When there is big difference  it means that a bet might have been postponed, not graded or some kind of error has occurred. In that case I will take a closer look. Of course you need to take into account any outstanding bets, bonus etc.

You should always monitor your bets,especially in this case when a game was  postponed .

The general rule is that the bet will be voided if the game will not be played in next 24 hours .Real MAdrid game was palyed within 24 hours  ,so read the rules of pinnacle and contact them.

I write down all my arbs on paper and check them when settled. It only takes 5-10 seconds to jot one arb down. A lot of these bookies are stupid as you can guess from the way the odds are far out of line and how they limit accounts after only a few small bets. I have had bookies like Skybet grade winning bets as losses on more than 1 occasion. If I did not check my account after the results I would have never known and not been able to correct these errors.