Eclipse should be fine, but the issue may be more centered on the network. I had to discontinue the app we used before when we upgraded our network....
We just upgraded routers and extenders, and are utilizing a pin/VPN connection for all of our visitors. The problem with the app that we used before is that the preloaded password sometimes is changed and the app was not updated. Instead I have set up the network to have a guest network available but with a phone number as the pin. And our regular secured network connection is separate.
Another suggestion might be to use an NFC tag to program the wifi setup say at the door or front desk, and anyone who has access to NFC in their device can scan the tag, and then connect to your network.
Good luck!!