Starting from scratch with a pre-0.5 Umbrel version

Hi all,

Have been using Umbrel from scratch, for the last 5 months had too many problems, running on rspi4, i bought the first product Umbrel created.
Not getting in the details, i am tired with all the workhours i have put in trying to fix things, i will format the ssd and install Umbrel OS v0.4.18 in order to recover my LND that is not working for the last 4 months and get my on chain funds that havent being able to get with my 24 seed phrase
Is there anything that i must do other than formatting my drive? Is there anyone that can tell me something that can help me from not doing anything stupid?

Thanks in advance