If this happens, you can only give up the reward.
If you don't lose the invitation code for the first time in "Eternal Tribulation", you can only choose to give up the reward or contact customer service to see if you can recover it, but there is little hope, because the rules of the fire transmission function of "Eternal Tribulation" require continued Fire Man needs to enter the invitation code when naming for the first time. If it is not entered, it will be deemed to be automatically given up. There is no other way to enter the invitation code. Neither party can receive rewards, so there is no way for the time being.