What should I do if my monitor sags after installing a third-party brand?

What should I do if my monitor sags after installing a third-party brand?

If the height is sagging:
Please confirm that the total weight of all suspended items on the monitor arm falls within the range of 5.8–6.4 kg (12.79–14.11 lbs) or 8–8.6 kg (17.64–18.96 lbs). If the weight is outside these specific ranges, rising or sagging is a normal occurrence. Please return the arm to the sales platform where it was purchased within the return window authorized by your distributor.

If the monitor tilt is sagging:
Please confirm that the total weight of all suspended items on the monitor arm falls within the range of 5.8 kg–8.6 kg (12.79–18.96 lbs).
If it meets this requirement, please use the Allen wrench provided inside the cable management box and adjust it according to the following instructions:

ARM_UM
ARM_UM