Heat-bed Thermistor Only Works When Held  

Heat-bed Thermistor Only Works When Held

Hello. I recently bought a new heatbed thermistor from Prusa. I plugged it in, put all the tape on, but then I realized I was having the same issue that I was having before. The heatbed cable would not heat, unless I either moved the bed into a specific position or held the wire in place.
This got worse, until I had to hold it until the bed heated. This made printing impossible, because I cannot hold it all the time, adjusting the wire the entire time. I tried holding it up with a ziptie, but there was simply too much movement. I made sure all the connections were right, and they seem to be fine.

Here is a short video of it:
Sorry for the poor quality, but it gets the general idea down. This “position” changes, sometimes I must pull it to the right to work, down to work, etc.

As told from the support chat, I found out the resistance of the Power Supply is 0.75. The Continuity is 192. (Sorry if I said that wrong, I am very new to using multimeters.)

I would really like some help on this, as the support team is currently busy, and I need help soon. Feel free to ask any questions/cocerns, and thank you for reading.

(Side note: This isn't quite as urgent, but, as you can tell from the video, my circuit box/eletronics box (Is that what it's called?) is not able to stay closed, the screw cannot keep it closed. I am currently using blue tape, which is likely not the best solution, but works.)