Unable to choose generic rank up gem to use

Ashtontonic

I have tech class rank up 2-> 3 gem and some generic rank up gem 2->3 will be expired soon,

There's no option for me to choose to use the generic one, instead the game automatically choose the class rank up gem for me.

it's funny i doesnt have the choice to decide which one i want to use in my inventory, the game decided for me instead...

Doesn't have the science rank up gem and it will allow me to use on science champ instead...Wat a joke...

World Eater

You have to contact support and let them know what hero you want to use the generic gem on. They’ll provide instructions to make that happen.

The game defaults to class gems and I see threads about this every week. It’s been an ongoing problem since gems were released and judging by their roadmap, Kabam has no intention on fixing this.