Hmmm... I have had no problems, but I do have some ArbETH.
There is really no rush as sLEO won't start paying out until Sept 23rd
What i did is get some ETH on Coinbase and sent it to my wallet as ArbETH. I think a lot of centralized exchanges allow you to chose whether to send ETH.ETH or ETH.ARB/BASE/etc.
I'm not in a hurry, it's just I like things to be done so I can change my focus...
I bought some ETH in HE and sent them to my Metamask wallet, they are there but when changing to Arb chain they aren't.... guess I'm missing something.
ETH from HE is mainnet ETH. You need arbETH for sLEO less than $1 will do.
If you have ETH in your wallet you should be able to swap it to ETH.ARB on LeoDex. Just connect your wallet there and go to the swap page. Select ETH ethereum in the top/from part and select ETH arbitrum in the bottom like so:
The button on the bottom wont say connect wallet once you have connected. It will say something like swap tokens.