The online courses are fine, there is no such thing as and EASA course or an EASA approval. There may be some requirements for the minimum elements to be studied in EASA Ops but you can do it yourself if you wish, you just have to meet the EASA Ops requirement. I have written many programmes myself and so long as it is included in your Ops manual it qualifies. Generally if you read the ICAO Doc on the subject and study articles on Skybrary you will probably have covered much more than the requirement but also be well informed.
MM