Both structures exist, and they work differently enough that the distinction matters.
The standard version is what you assumed: the acquisition fee vests at close, meaning no close means no fee. The PPM will typically say something like "payable at closing" or "earned upon acquisition of the asset." If that language is present and the deal never closed, the fee does not pay.
The structure your meetup contact described is less common but real. Some sponsors write in a "deal pursuit cost" or "pre-closing expense reimbursement" mechanism, where soft costs including a portion of the acquisition fee are drawn from the first capital call and treated as operating expenses of the raise. This is not the acquisition fee itself, it is a reimbursement framing, but in practice it puts sponsor cash recovery ahead of asset close. The language to look for is in the "use of proceeds" or "expense reimbursement" section, where you would see something like "pre-closing expenses, including costs incurred in connection with the acquisition" listed as a permitted draw against contributed capital. If that language is absent from the document you reviewed, the structure your contact described probably was not in this deal.
On the fee basis question: nearly every PPM I have seen ties the acquisition fee to the purchase price of the asset, not to equity raised. The logic is that the fee compensates for sourcing and executing the transaction, which is a function of deal size. So on a $7.8M purchase at 1.5 percent, the fee is $117,000 regardless of whether the sponsor raised $3.2M or $1.8M in equity. The equity stack compression changes the leverage ratio and potentially the lender's appetite, but it does not reduce the fee unless the PPM explicitly ties it to a percentage of equity raised, which would be unusual and worth flagging if you see it.
The risk you did not mention: a deal that closes at 40 to 50 percent of its equity target probably had its debt terms renegotiated or took on more leverage to cover the gap, which changes the risk profile materially from what the original PPM described. That delta between the underwritten capital stack and the actual one is worth understanding before you evaluate the sponsor's track record on this deal.
What section headings did the document actually use for compensation and use of proceeds? That would narrow down whether the reimbursement structure was there and just not labeled the way you were looking for it.