I also get the "wrong account number" message now. I sent an email to transfer points last weekend, and on Tuesday received the following reply:

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Thank you for your e-mail. The request to transfer 5,000 kilometers from each Frecuenta account to 10,000 Hilton Honors points (each account) has been requested. Due to the heavy call volume that Hilton is receiving, we have been advised that transfers are taking up to 4 weeks. Your patience is appreciated.
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I checked online on Thursday, but nothing was taken out yet. But now I get the "wrong account" message. Don't know whether or not the system is down, or if I've been terminated!!!

Well, since I got the initial positive message and haven't received a negative one,
I hope the points get transferred