All epoxies are two part systems; you must mix two parts together, or it will never bond or set. That is the nature of epoxy. You use equal parts of the gel from each tube, mix together, and use it.

I use 5 min epoxy for emergencies at the field. It has worked well for me for some smaller repairs, and you can get home and use the 30 min to reinforce if need be.

Maybe the OP didn't understand the mixing part, and that's why the 60second epoxy didn't work?