Mesh problem combining the physics of "fluid-structure interaction" and "heat transfer in fluids"

Hello everybody,

I'm working with a simulation model of a bimetallic strip inside a microchannel with laminar flow. I'm using both physics the fluid-structure interaction (with a dynamic mesh) and heat transfer in fluids.
My first problem appears here, as the multiphysics doesn't appear eventhough I try to add it.

Secondly, the simulation runs well with small heat fluxes (so the bimetallic strip deformation is low), but when I try to run with higher heat fluxes (high deformation of the strip) appears an error wich says "indefined Linsolve value" and also some warnings advising "mesh element inverted".

So my questions are: are incompatible both physics combined together? It is possible the existence of 2 different meshes in the same element, one dynamic and one static so when the bimetal rise up the static mesh stays at the initial position?

I attach an image of my model, a gif of the supposed movement of the strip and also a print of the screen with the errors and warnings (in spanish)

Thanks you in advance for any response, it will be a big help!