Flying USA-DR in a couple of months on United. Novice here. Unclear to me whether the entry forms must be uploaded no later than 72 hours before arrival, or you should upload them only up to 72 hours before.

United’s ambiguous language reads:

You’re required to submit forms closer to your travel date. Please check back soon to upload your documents.

And a few rows below…:

You’re required to submit documentation 72 hours before your travel begins. Please check back then to upload your documents.