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Ok, thanks.
Now seems only what I must find out is how to connect my KEYSTORE wallet to Uniswap.... :)

Hmm, keystore is not compatible. Best wallet (almost no problems) is Keplr. Sometimes is good CTRL wallet. You just have to use your seed phrase (12 or 24 words from the Keystore wallet).

...or you can do a new wallet in the Keplr wallet (CTRL wallet) and send your Keystore wallet USCD to this new address on Keplr (CTRL) wallet...

Still can not understand what I do wrong.

  1. New CTRL wallet created (on crome)
  2. 3 USDC and 1 ARB-ETH loded into it.
    Trying to swap USDC>> LEO
    It kepps pending, then - expires.
    Have tried that 3 times - always the same
    Was trying to swap 1 USDC >> 7.2 LEO

Do you have other wallets on chrome? Disable them. Try to have "Connecting priority" on CTRL wallet.