In Spanish, you can’t place “les” in front of the verb for affirmative commands.

 Position of Spanish direct and indirect object pronouns with infinitive/present participle and affirmative commands  

Yup, I agree, it is confusing.  But still these quizzes seem to help.

In Spanish, the placement of object pronouns like "les" can indeed be a bit tricky. In the correct answer, "tráeles unas copas de vino," the object pronoun "les" is placed before the verb "tráe." This placement is called "clitic doubling" or "clitic doubling with imperatives." It's a common structure in Spanish, particularly with affirmative commands or imperatives.

The placement of the pronoun before the verb in commands is standard in Spanish and helps to clarify who is receiving the action. In the incorrect option, "Por favor Marta, les trae unas copas de vino," the placement of "les" after the verb "trae" is incorrect in this context.

Remembering the placement of object pronouns in Spanish commands can take some practice, but once you get the hang of it, it becomes more intuitive.

[SOURCE: ChatGPT (also known as "TrustmebroGPT")]

Unsolicited TIP: Also when you use ChatGPT, make sure to copy-paste the question (don't mention context or the topic) and don't punctuate, avoid quotation marks and brackets and do as much possible to confuse the AI, because all AI are intelligent and will give you the right answer if you truly believe

'I dont get the GPT nswer but now I see that was command hance verb + les