Good, it sounds like your wpa_suplicant file is okay. I'm pretty sure ssh.txt won't work. You need an "ssh" file in the boot directory without an extension. Start over and reimage the SD card. You can easily create the empty file with you make by doing a "touch ssh" when you are in the boot directory.
It is a good skill to be able to quickly generate a fresh SD card and if you are going to run a single board computer headless, it's important to make sure ssh is running on first boot, and also WiFi if you need that to be able to log in.
When you ssh into your pi, you need to specify both an IP address and an account, like "ssh
[email protected]"