Unable to connect to the PLC in the “Tank Level and Mixing Control” challenge using the Modbus protocol

I’m using OpenPLC to design my point map, including the following addresses: %IX100.0 to %IX100.4 and%QX100.0 to %QX100.5.
However, I’m not sure if the scenario’s PLC (DI1/DO1) supports multiple points.
For example, when I try to input [800, 801, 802, 803, 804, none, none, none] in the variable DI1, the connection fails.
Any ideas or suggestions on what might be going wrong?