I see your answer here "Thanks for your question about translating a 10-minute video with SyncMonster! The credit usage depends on the video’s duration, not the number of languages you translate into. Since 1 credit equals 0.5 second of translation, a 10-minute video is 600 seconds in total. So, 300 credits will be consumed for 10 mins video regardless of how many languages you choose."

But, when I tried on your system. After upload a video, I can choose only ONE language to translate to, not multiple language, and when I try to translate to another language your system count the credit.

Is it possible to translate 1 minute video to 5 languages and use only credit of one minute video?

You are selling here onetime credit so it should not expire after one year, should be onetime credit for lifetime.

Cheers,