You are asking for whether IASE approved for DDE or not.
DDE stands for Department of Distance Education (DDE).
So IASE approved for DDE.

The Institute of Advanced Studies in Education (IASE) was sponsored by a non-governmental, Non-profit-motive making registered society, namely, Gandhi Vidya Mandir (GVM). The Government of India has accorded it the formal recognition of Deemed University, under Section 3 of the UGC Act-1956 vide notification F.9-29/2000-U.3 of 25th June 2002, and by the UGC vide notification F.6-25/2001 (cpp-i) of 27th DECEMBER 2002.

Courses and fee offered by IASE as follows;

1 Ph.D (Education)-Through entrance test-16000 (Yearly)
2 Ph.D (Biotech.) -Through entrance test -35000 (Yearly)
3 Bachelor in Engineering-Merit/entrance test -20000 (Sem)
4 B.Tech (Bio-technology) -Merit/entrance test -30000 (Sem)
5 Master in Business Administration-Merit/entrance test-25000 (Sem)
6 M.Sc. Biotechnology -Merit/entrance test -20000 (Sem)
7 Bachelor in Physiotherapy -Merit/entrance test -25000 (Yearly)
8 Certificate in Medical Lab Technology-Merit/entrance test -20000 (Yearly)
9 B.Sc. (Home Science) 60 Merit/entrance test 5000 (Yearly)
10 B.Sc. 60-Merit/entrance test -5000 (Yearly)

Here is the address of its official website.

.iaseuniversity.org.in/index.asp