Hi, i just wanna know if it's okay to use retin-a (tretinoin) and AHA at the same time (night)?

I tried to look for answers on the internet and it's very confusing. There were people saying that you can't because the AHA will deactivate the retin-a, so they were saying to use AHA in the morning and the retin-a at night... and then I saw this post from Paula's Choice website, and she clearly stated that it's great to use both at the same time because the AHA will help the retin-a to get into the skin more easily. I don't know, can you guys help me? What to do...