A good start but you need a lot of work:

 - There is no support for bc1's addresses: only P2PKH & P2SH
 - There is no order history or proof of addresses: you must sign a message from your address before asking for deposits.
 - High fees: especially if you want to mix large quantities.

You must put some money into escrow so we can test it.

Nice to see another mixer.
If I may suggest,
- you should consider changing the typeface. The site design is clean but the current typeface breaks your design.
- Javascript is required otherwise people can't even open the site :/
- I am puzzled as for using Cloudfare as SSL and CDN too, the SSL certificate isn't a full SSL, just a flexible that belongs to CloudFlare (randomssl.cloudfare.com) and there is no encryption between (?) .

Nice branding MixerTumbler. What about ether and other cryptos?

2-5% is fair enough so long as it comes out clean.

For this Mixer to be widely use, I think it should be marketed also in the forum. Should we be seeing the new signature campaign in the forum for the project?  If you plan so, I'd be honor to act as campaign manager.