Looking for a legitimate BTC Tumbling / Mixing Service.  All recommendations are appreciated.

Could anybody tell me if http://bitblendervrfkzr.onion is a real mixer site or is it just another scam?  I am assuming that since there is a a campaign going right now for that site, it is a legitimate site.

I sent BTC from my Bitcoin wallet to https://bitcoinmixer.eu/ now 5 hours ago, and still have not received my mixed coins.  I have emailed support and haven't received an answer.  Please somebody tell me that this mixer is legit, and how do I get support?

On 4/16, I purchased BTC from CEX.IO, and had the funds transferred into my Electrum wallet.  Once the funds arrived, I opened my other Electrum wallet, clicked on receive to get a receiving address, scanned the QR Code, and sent all funds from one wallet to the other.  When checking the receiving wallet, the address that was generated is not in my address list, and I am showing on block explorer the transaction has 389 confirmations.  I have spent hours trying to locate the missing funds, and have not been able to.

https://www.blockchain.com/btc/address/1N14wnnyHZdkET9yej4BGptSFc448kykFm

To answer your questions:

What OS are you using ?  Linux Ubuntu 18.04
What version of electrum are you using ? 3.3.4
Did you verify the signature of the file you have downloaded (to make sure you have the REAL electrum) ? YES
Is electrum synced (green / red circle at the bottom right) ? YES
Does your wallet contain the private key to the address you have posted ? I have checked all my Electrum wallets with the ismine command, and all results came back FALSE.

Any kind of assistance anybody can give me is greatly appreciated!