OK guys, apparently I was able to redeem my funds. After 9 weeks and only after I opened a case with BBB against Coinbase, the support people finally responded to my ticket. They said the funds were sent to the correct address via OMG network, but they cannot be seen on ERC20 network. I had to import my Coinbase wallet into Trust Wallet using the passphrase, then I connected with this new Trust Wallet to OMG network and I found the 400 USDT laying there on the floor. I had to "Exit" the funds form OMG network and after 5 days (for confirmation I guess) the funds were released back to ERC20 stream. From there (and after paying some GWEI) I had to interact with a ERC20 contract to transfer the funds from ERC20 stream to my ERC20 wallet.

Sooooo, very complicated process, I know for sure I will never try to mess around with any new networks and streams out there as the web of networks is very complicated and tricky, at least for me. Hope this thread helps anyone else having similar issues. Good luck!

I had 989 USDT in Bitfinex and sent only 400 to Coinbase Wallet. I guess the network took all of that 989, split it into 2 packets, sent 589 back to Bitfinex (which I got back) and 400 was sent to Coinbase (which I never got). I filed a ticket first with Bitfinex and they said the money left from their end and showed me the confirmation in the blockchain, which I shared here and also shared with Coinbase.

Yesterday I filed a complaint with BBB against Coinbase, for not answering my 2 tickets in 1.5 months and requested to get my 400 USDT in the wallet. I'll see what comes out of that.

Yes, I do have the seed to the wallet. But how is that gonna help me recover the funds? The funds didn't make it to my wallet.

Also in the blockchain details below it shows that I had a sum of 989 USDT from which I sent 400 USDT to my wallet. It split the amount, sent 400 USDT to my wallet and 589 USDT back to the source. Both wallet addresses are with 0x..., the 589 USDT got back, the 400 USDT vanished

https://blockexplorer.mainnet.v1.omg.network/transaction/0x32d610324f404937a12367efc69d577a176708226e8847b0132074fb2b6b6c2b

Yeah, that's probably what happened, I sent it through OMG Network to a ERC20 address. But how come Bitfinex (the source) didn't warn me it's not a valid address for OMG Network?

Thanks for answers guys. I knew Coinbase account doesn't support USDT, but I'm using Coinbase Wallet, which is a software wallet different than my coinbase exchange account. It's the equivalent of Metamask, Trust Wallet, etc.

Here below is a screen capture of my wallet, it definitely supports USDT, I have a small amount in it.

I'm hoping someone can shed some light over this issue. I initiated a transfer of 400 USDT from my Bitfinex account to my Coinbase Wallet (soft wallet, not account) USING OMG Network. I thought I was using the new network to avoid ERC20 congestions and overcharges. Well, apparently not worth it.
The transaction was sent on August 22, the OMG Network blockchain confirmed the transaction (see link below) but the money never showed in my Coinbase Wallet. I opened 2 tickets to Coinbase with this issue which were never answered, although I contacted them several times on twitter as well. Anyone can give me any ideas what I should try?  

https://blockexplorer.mainnet.v1.omg.network/transaction/0x32d610324f404937a12367efc69d577a176708226e8847b0132074fb2b6b6c2b

https://etherscan.io/block/10708486