Help understanding missing funds

Hi guys

I’ve used my full ISA allocation to purchase a stock. Amount invested shows that there should be £100.50 remaining in my funds but following the purchase it is sitting at zero.

Anyone know why this is?

I’ve just looked at the order and seen stamp of duty reserve tax. Presume that is it.

That would add up based on investing around £20,000 with 0.5% stamp duty. You should be able to see the amount in your history section.