Phone won't enter recovery mode

[AC Question]

Hi! I have a Lenovo A6000 plus running 5.1.1. Mokee lollipop rom. Recently I have been experiencing certain problems with the recovery mode I have(TWRP recovery 2.8.6.0.). I am not able to get into it. I try the button combination, and just the logo appears and stays forever, making me have to reinsert te battery. The normal mode works well. Also, I am able to access recovery mode by using ADB and fastboot, but somehow the button combination doesn't work. I am pretty sure the buttons are working, so that's not a problem. Please help, and thank you!