GSTIN Suspended Form GST Reg 17

My client received SCN on 17th Jan 2025 in FORM GST REG -17 stating that your registration is liable to be cancelled for the following reasons: 1) Rule 21(e)-person avails ITC in violation of the provisions of section 16 of the Act or the rules made 1. thereunder.
But, in SCN details related to alleged violation have not been provided.
I have replied online and offline both but didn't receive any response from the officer. GSTIN is still under suspension.
Pls advise