Why has this happened?

[NeilSpence]

Hi All,
I am placing a few lay bets using the in play trader set up. I have set it up where the lay bet goes in 10 ticks outside best market price. Below I have pasted the bets I put on for one race. The "entirely unmatched" issue was a common theme through out the day.
I am only using small stakes but I think there are enough funds to cover the liability. What I don't understand is why the lay isn't staying in the market and catching when the price bounces, instead it is just disappearing. Why are some of the bets getting matched and other showing entirely unmatched. I am sure the price is moving out but that doesn't seem to be the reason for not matching. Could it be anything else?
Thanks in advance....

26/01/2019 20:19:48: £ 0.96 Lay bet placed on Affluence at 6.2. [Liability staking]. Entirely unmatched when it initially reached the market. Ref: 151989434818
26/01/2019 20:19:49: £ 0.62 Lay bet placed on Affluence at 9. [Liability staking]. Fully matched at 7. Ref: 151989437282
26/01/2019 20:19:50: £ 0.61 Lay bet placed on Affluence at 9.2. [Liability staking]. Entirely unmatched when it initially reached the market. Ref: 151989439009
26/01/2019 20:19:51: £ 0.60 Lay bet placed on Affluence at 9.4. [Liability staking]. Fully matched at 2.9. Ref: 151989442572
26/01/2019 20:19:52: £ 0.69 Lay bet placed on Affluence at 8.2. [Liability staking]. Fully matched at 2.86. Ref: 151989444698
26/01/2019 20:19:54: £ 0.38 Lay bet placed on Affluence at 14. [Liability staking]. Fully matched at 7.2. Ref: 151989447565
26/01/2019 20:19:54: £ 2.33 Lay bet placed on Affluence at 3.15. [Liability staking]. Entirely unmatched when it initially reached the market. Ref: 151989448823
26/01/2019 20:19:57: £ 0.38 Lay bet placed on Affluence at 14. [Liability staking]. Entirely unmatched when it initially reached the market. Ref: 151989456097
26/01/2019 20:19:59: £ 0.32 Lay bet placed on Dont Do It at 16.5. [Liability staking]. Entirely unmatched when it initially reached the market. Ref: 151989460477
26/01/2019 20:20:00: £ 0.16 Lay bet placed on Dont Do It at 32. [Liability staking]. Entirely unmatched when it initially reached the market. Ref: 151989463055

[Trading96]

Do you have fill or kill on?

[NeilSpence]

I didnt set it to be on, is it a default to start with?
SHould it be on or off and where do i find it?

[ShaunWhite]

https://www.betangel.com/user-guide/fill_or_kill_.html

[NeilSpence]

Hi Shaun,
THe fill or kill isnt selected.
I was playign around this morning and it seems to say it when the price I put in is lower then the current price. It seems odd it doesnt bounce back and pick it up though.
What price should I ask my bet to enter the market to be sure the bet will match?
Currently I use 10 ticks outside best market price. Is that not enough??

[Dallas]

The log only writes what happened at the time your bet hits the market (matched, unmatched, part-matched)
Those unmatched ones could well have been matched afterwards, you'd need to refer to your matched bets to check