Hi all,
Haven't been here for good few years and it's good to be back.

I encountered some issues with buying Bitmaps where I get either of the following (using Unisat wallet on MagicEden):

1: PSBT not allowed due to missing inputs

2: not enough cardinal spending funds (when I have more than enough funds for the bitmap I want to buy)

3: after buying two bitmaps, the third is always showing a price which is 2-5 times the listed price. When I check what the total price is made of, there are tens of additional fees of 1200 sats - not sure why. After I wait for the first one or two transactions to be fully completed I can buy at the normal price again but only one or two bitmaps and then the problem comes back.

Sometimes I transfer some sats between wallets and it helps with unlocking the above, other times it does not help.
I inscribe all bitmaps from 10000 UTXO to 546 to free up available funds each time I buy one to but the issue still persists.

Is anyone willing to help me please?