Never had that problem. How many stories are you posting, and what type of delay between story are you using? Age of account doesn't hold as much weight as it once did. It's definitely still a factor, but not a major one as in comparison to recent activity on the account.. specific to that device. Everytime you connect an account... new or old, to a new device, the account automatically gets put in 'new device' phase and your actions on the account during this period will make a big determination on how well your account will perform in the future. Certain features will be off limits during this phase. Use this period to warm the account up properly, so by the time you've surpassed the wait, the account will be good for whatever actions you plan on doing. If you login to a new device, and start doing spammy behavior right off the back, you will be rewarded with limits and spam blocks. Instagram has changed alot over the years, you gotta keep up with the changes or switch platforms!