unfortunately I can't help much on the CLA front, I am basically just your fellow contributor and don't manage CLAs. If you want to chase this specific item, probably the best place is janusgr...@googlegroups.com
as suggested in the doc I posted the link to before.
Generally speaking, this project is supported by volunteers in their spare time, there doesn't seem to be anyone sponsored to work on it full time, so there may be any number of reasons for the delay in response to your contribution and CLA request. People could be just busy with their full-time work, or being affected by epidemic, or just having nice summer time off etc.
Similarly, when it comes to reviewing the actual contribution, many people (me included) get involved only occasionally, if they happen to be familiar with the relevant part of the codebase, or affected by the particular issue your contribution addresses. So it may take some time until a "more involved" team member can look at it and dig into the details.
Having been "in your shoes" before, I understand that delays may not exactly fill you with enthusiasm, but be assured that they don't mean your contribution is not appreciated - it will get looked at, and if it does add value, it will be merged eventually.