Can anyone recommend a decent licensing system?

I am extremely frustrated as I have tried 2 different systems (softactivate, licensespot) and wasted tons of time with them. Both have either not functioned properly, been a nightmare to work with and weed out bugs, or have had little to no support and documentation. Can someone please recommend a system that works well and actually has some damn support? Before you say don't even bother I realize no system is perfect, I'm still going to do it.

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