The first step is to get the printer wirelessly connected to the router, which you may have done already (using WPS?). The network reports (page 28 in the https://files.support.epson.com/docid/cpd5/cpd53991.pdf manual), directly from the printer, may be useful if you have to do some troubleshooting.
You would also have to check that the computer can detect the printer. You would have to add the printer. This can be difficult since drivers are involved.
In order to avoid any misunderstanding, your printer is an Epson ET-2700 (not one of the ET-27xx models mentioned in the AirPrint list). Correct?
If a printer is not an AirPrint model, drivers will be needed.
You may want to begin by resetting the printing system. Try to add the printer. Details can be found in the following articles:
Reset the Mac printing system to solve a problem - Apple Support
Add a printer on Mac - Apple Support
Check whether the operating system suggests a suitable driver to use. If so, try that one. If not, it may become necessary to download drivers from one of the Epson downloads pages (links above).
Do not hesitate to post back with additional questions.