Hello Codger2. I was just getting ready to start a thread to request help on this subject, but I thought I'd search first and your thread came up. So, forgive me for answering your question and possibly hi-jacking your thread a bit (unless you're having the same problem I am).
Here goes:
I have a RayMarine e127 MFD running the last available version of Lighthouse II software. Over the years, I have subscribed to THEYR weather and downloaded the grib files, I liked being able to do this and thought it provided valuable visual information in addition to all the on-line sources.
About a year ago, before renewing my THEYR subscription, I noticed that there were a lot of old grib files in the THEYR folder on my MFD. Being always paranoid about filling up the limited storage space with junk, I deleted these files. Since then, I have never been able successfully activate my THEYR renewal. I always get "activation failed" message. I have a strong suspicion that I may have accidently deleted some critical file from the THEYR folder (???), but I've never started what will likely be a long adventure with various customer service entities. I fear if I contact Raymarine, they will refer me to THEYR and if I contact THEYR, they will tell me contact Raymarine. Furthermore, I think the strongest knowledge base for Raymarine is in the US and any time I contact them, they refer me to their Swedish division, which has comparatively little knowledge and little inclination to research a solution for me.