Although this issue has been discussed a number of times, it’s not really spamming if you didn’t find any help, further for a personal issue it is nice to be able to get focused attention
Generally it is not the best idea to dismantle modules if you still have a warranty before contacting support officially.
Having said that, if you want to do a better clean, which could well be the issue as urs_lesse has mentioned, you can also disassemble the actual module for a more thorough option.
One thing to note, is that if you keep forcing the plug in, likely due to debris, you risk distorting the pin alignment, which even after cleaning will still exist, so have a close look at the contacts once they are clean.
