Failed to purchase with error returned

[Tiartapi]

Good evening Sir,
I have LMR in my Lumerin wallet, as well as ETH.
I have bridged the Lumerin wallet to MetaMask, and there is ETH in the MetaMask wallet.
The Arbitrum network is activated in the MetaMask wallet, as it is for my Lumerin wallet.
When, I try to purchase a contract, I always get the error message, included with this message!
Does there have to be a certain amount of LMR and ETH in my Lumerin wallet for things to work?
I have more than enough LMR and ETH in the Lumerin wallet to cover the displayed gas fees etc.
I do not get any other error messages.

Kind regards,
Simon Lovell.

[Tiartapi]

Here is another screenshot that shows a purchase price of 214 LMR plus a 0.0002 ETH fee.
There must be something that I am not getting! I would appreciate any advice.

Simon Lovell.