muneeb Thanks for good questions. Here are the answers.
For the Storage - Commercial plan includes 1GB of storage and than you pay $1/month for any extra storage of telematics data. Your current combined storage use is displayed on flespi.io dashboard.
In restrictions you see that one channel storage is limited to 10GB, it means that you may create hundreds of channels, but each channel can have maximum of 10GB of buffer storage.
For active MQTT sessions - 10K are included into Commercial plan, but for each 1K sessions over it you will pay $1/month. Restrictions specifies that in any circumstances you are not allowed to have more then 10M active MQTT sessions.
We have some explanations on how platform usage is calculated, just in case.
2: We do not limit UDP, they are auto-limited by maximum number of messages per minutes in one channel (see restrictions). We only limit quantity of active TCP connections.
3 and 4: Channel buffer is accessed separately via special REST API GET/DELETE calls. You may disable it at all and use streams for pushing data to your platform (they have own limits) or use MQTT subscribtions. If using MQTT you may even use shared subscriptions to load-balance your consumers, each MQTT session will have its own restrictions in accumulated size while offline and you can have thousands of sessions in case of problems. Same with streams - if you see that there is some problem with your receiver you may create another stream, subscribe it to same channels or devices and pause previous one. Some of our high-load users already did this, usually stream gives you at least few hours, may be even days until you filled its 10GB buffer and your users/bots will notify you about the problems in your system much earlier. See here more information about messages from flespi and how to consume them.
6: API calls, MQTT sessions, traffic via channels or streams - almost any kind of normal activity is counted as alive account. You may just construct the system and from that point of time never login, it will continue to operate. But take into account that sometimes we do some changes, in very rare cases they may be incompatible to your system so we advise you to monitor this forum and especially one place for everything is flespi NOC.