Error at grompp level as the box size is increased?

GROMACS version: 2022 and 2024

Dear GMX users:
I am trying to simulate HKUST-1 MOF. I made a supercell of 2×2×2. As you know, when a supercell is created, a default box is also defined that covers the whole supercell (i.e., equal to the size of super cell). The problem is that when I increase the box size to add other things like a drug, I encounter this error at the grompp level:

The largest distance between excluded atoms is 1.725 nm, which is larger than the cut-off distance. This will lead to missing long-range corrections in the forces and energies.

I also had the same problem with the simulation of MFI Zeolites. I have tried with Gromacs versions 2022 and 2024, but the problem remains.
What should I do to solve this problem? The supercell is periodic. May it be the problem?

Thank you in advance

My guess is that you have bonded interactions across one or more periodic boundaries. Then you can not simply increase the box size.