Can I cite information from a report summary, if the report is locked behind a paywall? I've found a market research report which has some really useful information for me, but the report itself is locked behind a paywall, and I've received no response to the mechanism for requesting a free copy.

My question is, can I just cite the info from the report's summary (it's actually still quite detailed) and if so, should I cite that as a separate source (webpage) rather than saying that I'm citing the report itself?
If you are able to read the information in the report, even if it was only in the abstract, you can cite it.

Cite the report and the complementary references you have found.