Question about ASUS WL-Router RT-BE88U

I was able to carry out a search and it does indeed look like an incompatibility. Whether it is due to the router, the SFP+ module, a defect, the configuration or the combination of components, it is not possible for us to suggest a specific solution. In principle, I would have the compatibility checked with the manufacturers. I am releasing the question again, as someone may have successfully used this combination, as you have already mentioned, and may know a trick.