Online ITR2 Issue

From the first page, Schedules, you have to open tab "Income source." 

Select the tab against 'Income from House Property' & the page will appear in the ITR.

Do not worry for that, there is difference of page size, in the Json file and print preview PDF; so many such items look like missing, but they are intact in the system. It is called web mismatch.

Do not wait for more development if you are able to file your ITR in present conditions. After filling all the data completely, validate it, rectify for any errors detected. & get print preview. During its check if you find anything missing, go to the ITR schedule, re-verify if the data is there in ITR. If its there do not worry, just file it.Good luck.