Working at a Pre Stage Startup, 10k PM pay, no work

Oky so I’m a intern at a pre stage startup for past 2 months. The first month I was suppose to recive 8k stippend but was paid 7.2k and this month it should be 10k but ig they’ll pay me 9k.

Anyways the main issue is, there is no proper work, from what I can see while working, they have been working on the website itself for past 3 years, none of the team members work full time, it’s just their side business and they have their main jobs except for me.

Some days in being told to work on UI changes or some days on automation and that is absolutely fine with me, but in my 2 months of working I’ve barely worked 10-12days that’s something I don’t like. For instance today was deployment day, I made all the changes, got approved yesterday but now today, like I said they have their own main work, I was just sitting throughout the day, my work timing is 1pm to 10pm and I was sitting idly till 9:30 and then lead Dev came and we pushed the code to prod.

To be frank, I want to work, to go to office and work 12hrs. Cause this is just getting my potential wasted and my time wasted as well.

What do you all say? Should I quit or continue?

I have been applying for a while and didn’t get any job so this was kinda recommendation for me.