A while back, I (along with my collaborator) submitted an article for publication in an esteemed journal. A few weeks after the submission, I came to know that the journal is an open-access journal and, therefore, requires an APC charge if the article gets accepted.
After the first review report (which was in favor of publication), we mailed the editor to ask if the APC charge could be waived, considering that both of us are students and can not afford such a high value (considering the exchange rate between the countries). We didn't get any reply from the mail, so we paused the inquiry and submitted the revision to the article.
However, we are now worried that withdrawing would cause us a poor reputation and perhaps put us on a blacklist for the journal and its associates.
I would like some suggestions. What can we do? Shall we go along and wait for the second report to come and ask after acceptance whether there is a waiver or not? Or should we withdraw now since we don't have funds anyway? Or should I send a reminder to the editor? What if he says no?