Impotence is apparently grounds for divorce in 23 US States. But presumably not in the others—ladies be careful which US State you marry and live in!
But, of course, it is a very serious and upsetting affliction. What is the position in the UK?
There is no ground for divorce specified as impotence. Some women believe that impotence is unreasonable behaviour. I can see what they mean but of course it isn’t. An existing problem concealed before marriage would be, as it is the concealing that is unreasonable. Also I expect that a refusal to attempt any treatment would be regarded as unreasonable behaviour.