Does anyone knows the reason why 12626 is getting delayed continuously for past few days? One two hours is understandable but 6-7 hours is unacceptable!!!

12626 ന്യൂഡൽഹി - തിരുവനന്തപുരം കേരള സൂപ്പർ ഫാസ്റ്റ് എക്സ്പ്രസ്സ്‌..The first Tricolour Wap 7 of Indian Railways with King of Overtakes..Super Offlink SER TATANAGAR WAP 7 37011 taking the "S" curve of ERSD with SR 12626 NDLS- TVC Kerala Superfast Express.Ernakulam D Cabin (ERSD), Southern Railway (SR)

Royapuram WAP-7 30690 hauling the 12626 New Delhi ⇌ Thiruvananthapuram Kerala Superfast Express cruising towards Chengannur in its Old Timetable ❤️📸 On 26 Nov 2020 Chengannur, Kerala

ED ( Erode) WAP4 22522 negotaites turnouts and the curve towards KTYM after departing ERS with the classic ICF liveried 12626 - NDLS - TVC Kerala express. (Pic taken 06 May 2018)