I'm not sure how you have arranged your affairs but it would be best to make sure that the domain is owned (as far as the whois is concerned) by you personally or by a company that isn't dissolved(!). As it stands you are giving them ammunition for making a case against you.
A website can be owned by a different entity to the domain owner so an argument can be made that just because the dissolved company doesn't exist any more, this does not affect your right to own the domain. I'm not sure if things still work this way but it used to be the case that the assets of a dissolved company become bona vacantia and get transferred to the crown! What a scam that is.
I have never heard of the complainant and I believe the size of the complainant's business and how well known their trade mark is are taken into account when deciding ownership disputes. So we're not talking about coca cola or McDonalds here which is in your favour.
But I do think you need to get your house in order or you are making things look dodgy from your end and giving them ammunition. Taking the site down may look guilty, then again it may be a reasonable thing to do while you take legal advice (which I am not giving). But if you put it back up I would remove any reference to the dissolved company, and clearly state who the owner is. Also make sure you haven't got any other domains/ websites mentioning this or any other dissolved company as they are putting you at risk.
There is another potential minefield. If you have been introducing customers to loans for commission how have you been getting the commission payments if the company has dissolved? It doesn't look great to be acting as one entity on the website but taking the money via another one. All needs resolving very quickly.
So I think I would promptly decide who is trading/ which entity is operating your business activities, ensure that this entity is legally actively trading and not dissolved, ensure that the website content and whois are consistent in referring to that entity, and possibly reply thanking them for pointing out the website content is out of date and you have now updated it and that your use of the domain cannot be a deliberate attempt to infringe their mark as your use of it in that way predates their trademark and you had never heard of them before anyway as they aren't well known. Something like that.
Obviously I am not a lawyer, this is not intended as legal advice.
I'd also delete the references to the name in this thread after a day or two once people have replied in case Google grabs the word content of the images now or in the future which could enable the complainant to discover this thread at some point.
Good luck!
