Help, Help! Bosch Dishwasher Check Water Error

[Atomic King]

Hi my Bosch dishwasher started giving me the check water error, light flashing after pressing start. I checked the styrofoam float switch and also drains, cleaned out the bottom, everything is in good shape. When I press power on and off then start, there is a quick clicking sound and then the light starts flashing again and it does not start washing. This happens after I reset the machine by pressing turning power off or pressing reset (3 seconds). I noticed in the left side water catchment area a part inside looks very dirty and might be blocked (image attached). I have no clue if this is the reason or how this shall be disassembled and cleaned? I don't know what else to do but I am in the Caribbean and there is hardly anyone who knows what they are doing with machines like these. I have guests coming in about 5 days they will not be happy, of course this started happening shortly before! Thanks for your help!