You can say it 1000X and still be missing the point.
3% is a prohibitive barrier to entry. You want the MM to move? Encourage sellers to post offers on our market. It will move.

"Our import tax is not high."
Listen.
3% basically prohibits entry into the market. This is a fact.
More 'guys' will come to sell. Your volume on the MM will go up (your main concern apparently).

"problem is mm"

Again, to "fix this increase volume of trade on the Ireland market. Again, MM is secondary thing. You must fix the trade first. It really is that simple.

"You just don't get it do you?
There are 2 markets accessible to everyone.
Romanian market and ireland market"

No, you dont get it. Your market is NOT accessible to everyone. Our import tax is to high

"The problem isn't the taxes :/ , it's our IEP circulation, only a few bunch buy IEP, we have more sellers than buyers :/"
No, the mm is a background operation of the economy. Drop import to 0/1%.

"I designed the taxes to encourage outside investment. But that didn't really happen. "

Then drop import tax to 0 or 1%

2% and above drops imports way way down.