Love Holidays act as agents and are nothing more than this.
" We operate a booking platform (online and via telephone) which enables users of our platform to search, compare, combine and book various travel services including, but not limited to, flights, hotels and transfers (“each a Travel Service”). We do not own or operate any of the Travel Services. When you search for Travel Services and make a booking on our platform, our service is only to obtain and provide information about those Travel Services, arrange for you to enter into a contract with the individual provider of the Travel Service in question (the "Service Provider") and to agree payment terms between you and that Service Provider. The Service Provider will be the party responsible for supplying the Travel Service to you.
Please note that the Packages, which can be organised on our website, are not the same as traditional pre-packaged holidays where the Travel Services are usually pre-selected by a tour operator or travel company and are sold to you under a single contract. Through our booking platform, you will be able to select each Travel Service yourself and subsequently enter into a contract with each Service Provider. Together, your combined booking will form a Package if the criteria set out above is satisfied. You will know this is the case if you receive an ATOL Certificate stating that it is for a Multi-Contract Package."
The above in quote marks is direct from their website's terms and conditions which sadly many people do not read carefully enough.
Ryanair is well known for not refunding customers so good luck with getting anything out of them. We were ourselves refused any sort of refund for my dad's return flight as he died whilst on holiday, they did not want to know.
I would therefore go back to Love Holidays as your initial contact was with them and use the words significant change as specified in their terms and conditions as the flights have been moved forward by a day.