The Historical Background to the 1830s controversy re: הַקְרָבַת קָרְבַּן פֶּסַח בַּזְּמַן הַזֶּה - What was going on in Turkish Palestine at that time

R Akiva Eger thought the Muslims would allow the Jews to offer sacrifices on the Temple Mount. The Chasam Sofer disabused him. Why did R Akiva Eger think this?